21112141433220 has 72 divisors (see below), whose sum is σ = 64057743300096. Its totient is φ = 5628358804032.

The previous prime is 21112141433177. The next prime is 21112141433249. The reversal of 21112141433220 is 2233414121112.

21112141433220 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 2 + 1 + 4 + 1 + 433 + 220 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15442212 + ... + 16753691.

It is an arithmetic number, because the mean of its divisors is an integer number (889690879168).

Almost surely, 2^{21112141433220} is an apocalyptic number.

21112141433220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112141433220 is an abundant number, since it is smaller than the sum of its proper divisors (42945601866876).

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

21112141433220 is a wasteful number, since it uses less digits than its factorization.

21112141433220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32199561 (or 32199556 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 21112141433220 its reverse (2233414121112), we get a palindrome (23345555554332).

The spelling of 21112141433220 in words is "twenty-one trillion, one hundred twelve billion, one hundred forty-one million, four hundred thirty-three thousand, two hundred twenty".