111122010021100 has 72 divisors (see below), whose sum is σ = 259689867565968. Its totient is φ = 41028673324800.

The previous prime is 111122010021097. The next prime is 111122010021109. The reversal of 111122010021100 is 1120010221111.

It is a happy number.

It is a super-2 number, since 2×111122010021100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (111122010021109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53882970 + ... + 55907230.

It is an arithmetic number, because the mean of its divisors is an integer number (3606803716194).

Almost surely, 2^{111122010021100} is an apocalyptic number.

111122010021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122010021100 is an abundant number, since it is smaller than the sum of its proper divisors (148567857544868).

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

111122010021100 is a wasteful number, since it uses less digits than its factorization.

111122010021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066515 (or 2066508 counting only the distinct ones).

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

Adding to 111122010021100 its reverse (1120010221111), we get a palindrome (112242020242211).

The spelling of 111122010021100 in words is "one hundred eleven trillion, one hundred twenty-two billion, ten million, twenty-one thousand, one hundred".