111221112202100 has 36 divisors (see below), whose sum is σ = 241350663571500. Its totient is φ = 44488288181760.

The previous prime is 111221112202073. The next prime is 111221112202133. The reversal of 111221112202100 is 1202211122111.

It can be written as a sum of positive squares in 6 ways, for example, as 5207359697296 + 106013752504804 = 2281964^2 + 10296298^2 .

It is a super-2 number, since 2×111221112202100² (a number of 29 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 11 ways as a sum of consecutive naturals, for example, 29010236 + ... + 32619564.

Almost surely, 2^{111221112202100} is an apocalyptic number.

111221112202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221112202100 is an abundant number, since it is smaller than the sum of its proper divisors (130129551369400).

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

111221112202100 is a wasteful number, since it uses less digits than its factorization.

111221112202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917492 (or 3917485 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111221112202100 its reverse (1202211122111), we get a palindrome (112423323324211).

The spelling of 111221112202100 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred twelve million, two hundred two thousand, one hundred".