111210012120100 has 36 divisors (see below), whose sum is σ = 241654956645844. Its totient is φ = 44423317226880.

The previous prime is 111210012120001. The next prime is 111210012120143. The reversal of 111210012120100 is 1021210012111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 976349514816 + 110233662605284 = 988104^2 + 10499222^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 758521599 + ... + 758668198.

Almost surely, 2^{111210012120100} is an apocalyptic number.

111210012120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210012120100 is an abundant number, since it is smaller than the sum of its proper divisors (130444944525744).

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

111210012120100 is a wasteful number, since it uses less digits than its factorization.

111210012120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517190544 (or 1517190537 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111210012120100 its reverse (1021210012111), we get a palindrome (112231222132211).

The spelling of 111210012120100 in words is "one hundred eleven trillion, two hundred ten billion, twelve million, one hundred twenty thousand, one hundred".