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130122100 = 22521301221
BaseRepresentation
bin1111100000110…
…00000101110100
3100001211212222001
413300120011310
5231302401400
620524545044
73140006503
oct760300564
9301755861
10130122100
11674a5729
12376b2184
1320c5c234
14133d283a
15b654a6a
hex7c18174

130122100 has 18 divisors (see below), whose sum is σ = 282365174. Its totient is φ = 52048800.

The previous prime is 130122079. The next prime is 130122121. The reversal of 130122100 is 1221031.

130122100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (130122079) and next prime (130122121).

It can be written as a sum of positive squares in 3 ways, for example, as 34786404 + 95335696 = 5898^2 + 9764^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 650511 + ... + 650710.

Almost surely, 2130122100 is an apocalyptic number.

130122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130122100 is an abundant number, since it is smaller than the sum of its proper divisors (152243074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130122100 is a wasteful number, since it uses less digits than its factorization.

130122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301235 (or 1301228 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 130122100 is about 11407.1074335258. The cubic root of 130122100 is about 506.7382506968.

Adding to 130122100 its reverse (1221031), we get a palindrome (131343131).

The spelling of 130122100 in words is "one hundred thirty million, one hundred twenty-two thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 1301221 2602442 5204884 6506105 13012210 26024420 32530525 65061050 130122100