20102002002 has 24 divisors (see below), whose sum is σ = 46116358236. Its totient is φ = 6306510336.

The previous prime is 20102001989. The next prime is 20102002003. The reversal of 20102002002 is 20020020102.

It can be written as a sum of positive squares in 2 ways, for example, as 19692789561 + 409212441 = 140331^2 + 20229^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20102002003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32846103 + ... + 32846714.

Almost surely, 2^20102002002 is an apocalyptic number.

20102002002 is an abundant number, since it is smaller than the sum of its proper divisors (26014356234).

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

20102002002 is a wasteful number, since it uses less digits than its factorization.

20102002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65692842 (or 65692839 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20102002002 its reverse (20020020102), we get a palindrome (40122022104).

The spelling of 20102002002 in words is "twenty billion, one hundred two million, two thousand, two".