202122122122 has 8 divisors (see below), whose sum is σ = 303186628836. Its totient is φ = 101059912512.

The previous prime is 202122122087. The next prime is 202122122131. The reversal of 202122122122 is 221221221202.

It can be written as a sum of positive squares in 2 ways, for example, as 196170153921 + 5951968201 = 442911^2 + 77149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×202122122122² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202122122122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334233 + ... + 718300.

Almost surely, 2^202122122122 is an apocalyptic number.

202122122122 is a deficient number, since it is larger than the sum of its proper divisors (101064506714).

202122122122 is a wasteful number, since it uses less digits than its factorization.

202122122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148552.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202122122122 its reverse (221221221202), we get a palindrome (423343343324).

The spelling of 202122122122 in words is "two hundred two billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-two".