21220002022032 has 160 divisors (see below), whose sum is σ = 66594465360000. Its totient is φ = 6415981608960.

The previous prime is 21220002022019. The next prime is 21220002022033. The reversal of 21220002022032 is 23022020002212.

21220002022032 is a `hidden beast` number, since 212 + 200 + 0 + 2 + 0 + 220 + 32 = 666.

It is a super-2 number, since 2×21220002022032² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21220002021996 and 21220002022014.

It is not an unprimeable number, because it can be changed into a prime (21220002022033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2839057 + ... + 7106352.

It is an arithmetic number, because the mean of its divisors is an integer number (416215408500).

Almost surely, 2^{21220002022032} is an apocalyptic number.

21220002022032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21220002022032 is an abundant number, since it is smaller than the sum of its proper divisors (45374463337968).

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

21220002022032 is a wasteful number, since it uses less digits than its factorization.

21220002022032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9945886 (or 9945874 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21220002022032 its reverse (23022020002212), we get a palindrome (44242022024244).

The spelling of 21220002022032 in words is "twenty-one trillion, two hundred twenty billion, two million, twenty-two thousand, thirty-two".