21220212199932 has 72 divisors (see below), whose sum is σ = 53987440525200. Its totient is φ = 7027655240448.

The previous prime is 21220212199931. The next prime is 21220212200003. The reversal of 21220212199932 is 23999121202212.

21220212199932 is a `hidden beast` number, since 21 + 220 + 212 + 199 + 9 + 3 + 2 = 666.

It is a super-2 number, since 2×21220212199932² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220212199931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5816898 + ... + 8733654.

It is an arithmetic number, because the mean of its divisors is an integer number (749825562850).

Almost surely, 2^{21220212199932} is an apocalyptic number.

It is an amenable number.

21220212199932 is an abundant number, since it is smaller than the sum of its proper divisors (32767228325268).

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

21220212199932 is a wasteful number, since it uses less digits than its factorization.

21220212199932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918075 (or 2918070 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 21220212199932 in words is "twenty-one trillion, two hundred twenty billion, two hundred twelve million, one hundred ninety-nine thousand, nine hundred thirty-two".