202020000020122 has 4 divisors (see below), whose sum is σ = 303030000030186. Its totient is φ = 101010000010060.

The previous prime is 202020000020117. The next prime is 202020000020123. The reversal of 202020000020122 is 221020000020202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 190624440235761 + 11395559784361 = 13806681^2 + 3375731^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (202020000020123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505000005029 + ... + 50505000005032.

Almost surely, 2^{202020000020122} is an apocalyptic number.

202020000020122 is a deficient number, since it is larger than the sum of its proper divisors (101010000010064).

202020000020122 is a wasteful number, since it uses less digits than its factorization.

202020000020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101010000010063.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 202020000020122 its reverse (221020000020202), we get a palindrome (423040000040324).

The spelling of 202020000020122 in words is "two hundred two trillion, twenty billion, twenty thousand, one hundred twenty-two".