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112121112102 = 23109124237069
BaseRepresentation
bin110100001101011110…
…0000110011000100110
3101201101220122122011120
41220122330012120212
53314111001041402
6123301400314410
711046315504516
oct1503274063046
9351356578146
10112121112102
114360649901a
1219891172a06
13a75aa9a41c
1455d8ba7846
152db34303bc
hex1a1af06626

112121112102 has 32 divisors (see below), whose sum is σ = 224572158720. Its totient is φ = 37318757280.

The previous prime is 112121112101. The next prime is 112121112113. The reversal of 112121112102 is 201211121211.

It is a happy number.

It is a super-2 number, since 2×1121211121022 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121112101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15857424 + ... + 15864492.

It is an arithmetic number, because the mean of its divisors is an integer number (7017879960).

Almost surely, 2112121112102 is an apocalyptic number.

112121112102 is an abundant number, since it is smaller than the sum of its proper divisors (112451046618).

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

112121112102 is a wasteful number, since it uses less digits than its factorization.

112121112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 112121112102 its reverse (201211121211), we get a palindrome (313332233313).

The spelling of 112121112102 in words is "one hundred twelve billion, one hundred twenty-one million, one hundred twelve thousand, one hundred two".

Divisors: 1 2 3 6 1091 2182 2423 3273 4846 6546 7069 7269 14138 14538 21207 42414 2643493 5286986 7712279 7930479 15424558 15860958 17128187 23136837 34256374 46273674 51384561 102769122 18686852017 37373704034 56060556051 112121112102