20021232102 has 32 divisors (see below), whose sum is σ = 42382878720. Its totient is φ = 6287556960.

The previous prime is 20021232017. The next prime is 20021232157. The reversal of 20021232102 is 20123212002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464518 + ... + 505785.

It is an arithmetic number, because the mean of its divisors is an integer number (1324464960).

Almost surely, 2^20021232102 is an apocalyptic number.

20021232102 is an abundant number, since it is smaller than the sum of its proper divisors (22361646618).

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

20021232102 is a wasteful number, since it uses less digits than its factorization.

20021232102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970508.

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

Adding to 20021232102 its reverse (20123212002), we get a palindrome (40144444104).

The spelling of 20021232102 in words is "twenty billion, twenty-one million, two hundred thirty-two thousand, one hundred two".