111020122100 has 18 divisors (see below), whose sum is σ = 240913665174. Its totient is φ = 44408048800.

The previous prime is 111020122097. The next prime is 111020122133. The reversal of 111020122100 is 1221020111.

It can be written as a sum of positive squares in 3 ways, for example, as 36529936 + 110983592164 = 6044^2 + 333142^2 .

It is a super-2 number, since 2×111020122100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555100511 + ... + 555100710.

Almost surely, 2^111020122100 is an apocalyptic number.

111020122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111020122100 is an abundant number, since it is smaller than the sum of its proper divisors (129893543074).

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

111020122100 is a wasteful number, since it uses less digits than its factorization.

111020122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110201235 (or 1110201228 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111020122100 its reverse (1221020111), we get a palindrome (112241142211).

The spelling of 111020122100 in words is "one hundred eleven billion, twenty million, one hundred twenty-two thousand, one hundred".