22121211403100 has 36 divisors (see below), whose sum is σ = 48052465648488. Its totient is φ = 8839371768000.

The previous prime is 22121211403069. The next prime is 22121211403103. The reversal of 22121211403100 is 130411212122.

It is a super-2 number, since 2×22121211403100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121211403103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113812331 + ... + 114006530.

It is an arithmetic number, because the mean of its divisors is an integer number (1334790712458).

Almost surely, 2^{22121211403100} is an apocalyptic number.

22121211403100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121211403100 is an abundant number, since it is smaller than the sum of its proper divisors (25931254245388).

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

22121211403100 is a wasteful number, since it uses less digits than its factorization.

22121211403100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227819846 (or 227819839 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 22121211403100 its reverse (130411212122), we get a palindrome (22251622615222).

The spelling of 22121211403100 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred eleven million, four hundred three thousand, one hundred".