21122032002 has 16 divisors (see below), whose sum is σ = 42251781792. Its totient is φ = 7039391040.

The previous prime is 21122031989. The next prime is 21122032027. The reversal of 21122032002 is 20023022112.

It is a happy number.

It is a super-2 number, since 2×21122032002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285688 + ... + 351939.

It is an arithmetic number, because the mean of its divisors is an integer number (2640736362).

Almost surely, 2^21122032002 is an apocalyptic number.

21122032002 is an abundant number, since it is smaller than the sum of its proper divisors (21129749790).

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

21122032002 is a wasteful number, since it uses less digits than its factorization.

21122032002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643153.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21122032002 its reverse (20023022112), we get a palindrome (41145054114).

The spelling of 21122032002 in words is "twenty-one billion, one hundred twenty-two million, thirty-two thousand, two".