130722100 has 18 divisors (see below), whose sum is σ = 283667174. Its totient is φ = 52288800.

The previous prime is 130722091. The next prime is 130722103. The reversal of 130722100 is 1227031.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 20304036 + 110418064 = 4506^2 + 10508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130722103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653511 + ... + 653710.

Almost surely, 2^130722100 is an apocalyptic number.

130722100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130722100 is an abundant number, since it is smaller than the sum of its proper divisors (152945074).

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

130722100 is a wasteful number, since it uses less digits than its factorization.

130722100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307235 (or 1307228 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 130722100 is about 11433.3765791213. The cubic root of 130722100 is about 507.5159223975.

Adding to 130722100 its reverse (1227031), we get a palindrome (131949131).

The spelling of 130722100 in words is "one hundred thirty million, seven hundred twenty-two thousand, one hundred".