111211021010100 has 144 divisors (see below), whose sum is σ = 371670800671296. Its totient is φ = 25374350592000.

The previous prime is 111211021010059. The next prime is 111211021010143. The reversal of 111211021010100 is 1010120112111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 991129471 + ... + 991241670.

It is an arithmetic number, because the mean of its divisors is an integer number (2581047226884).

Almost surely, 2^{111211021010100} is an apocalyptic number.

111211021010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111211021010100 is an abundant number, since it is smaller than the sum of its proper divisors (260459779661196).

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

111211021010100 is a wasteful number, since it uses less digits than its factorization.

111211021010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982371186 (or 1982371179 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111211021010100 its reverse (1010120112111), we get a palindrome (112221141122211).

The spelling of 111211021010100 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-one million, ten thousand, one hundred".