20001122202102 has 64 divisors (see below), whose sum is σ = 41522788581120. Its totient is φ = 6415191570816.

The previous prime is 20001122202067. The next prime is 20001122202133. The reversal of 20001122202102 is 20120222110002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400983988 + ... + 401033864.

It is an arithmetic number, because the mean of its divisors is an integer number (648793571580).

Almost surely, 2^{20001122202102} is an apocalyptic number.

20001122202102 is an abundant number, since it is smaller than the sum of its proper divisors (21521666379018).

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

20001122202102 is a wasteful number, since it uses less digits than its factorization.

20001122202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57725.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20001122202102 its reverse (20120222110002), we get a palindrome (40121344312104).

The spelling of 20001122202102 in words is "twenty trillion, one billion, one hundred twenty-two million, two hundred two thousand, one hundred two".