20202020122 has 4 divisors (see below), whose sum is σ = 30303030186. Its totient is φ = 10101010060.

The previous prime is 20202020119. The next prime is 20202020131. The reversal of 20202020122 is 22102020202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22102020202 = 2 ⋅11051010101.

It can be written as a sum of positive squares in only one way, i.e., 11060939241 + 9141080881 = 105171^2 + 95609^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050505029 + ... + 5050505032.

Almost surely, 2^20202020122 is an apocalyptic number.

20202020122 is a deficient number, since it is larger than the sum of its proper divisors (10101010064).

20202020122 is a wasteful number, since it uses less digits than its factorization.

20202020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101010063.

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

Adding to 20202020122 its reverse (22102020202), we get a palindrome (42304040324).

The spelling of 20202020122 in words is "twenty billion, two hundred two million, twenty thousand, one hundred twenty-two".