111000022122100 has 18 divisors (see below), whose sum is σ = 240870048005174. Its totient is φ = 44400008848800.

The previous prime is 111000022122061. The next prime is 111000022122103. The reversal of 111000022122100 is 1221220000111.

It can be written as a sum of positive squares in 3 ways, for example, as 9430955012196 + 101569067109904 = 3070986^2 + 10078148^2 .

It is a super-2 number, since 2×111000022122100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000022122103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555000110511 + ... + 555000110710.

Almost surely, 2^{111000022122100} is an apocalyptic number.

111000022122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111000022122100 is an abundant number, since it is smaller than the sum of its proper divisors (129870025883074).

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

111000022122100 is a wasteful number, since it uses less digits than its factorization.

111000022122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110000221235 (or 1110000221228 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111000022122100 its reverse (1221220000111), we get a palindrome (112221242122211).

The spelling of 111000022122100 in words is "one hundred eleven trillion, twenty-two million, one hundred twenty-two thousand, one hundred".