202012210002122 has 16 divisors (see below), whose sum is σ = 326327856466920. Its totient is φ = 93236278813632.

The previous prime is 202012210002091. The next prime is 202012210002131. The reversal of 202012210002122 is 221200012210202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 185035922989681 + 16976287012441 = 13602791^2 + 4120229^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202012210002122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16026404 + ... + 25707392.

Almost surely, 2^{202012210002122} is an apocalyptic number.

202012210002122 is a deficient number, since it is larger than the sum of its proper divisors (124315646464798).

202012210002122 is a wasteful number, since it uses less digits than its factorization.

202012210002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10483577.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202012210002122 its reverse (221200012210202), we get a palindrome (423212222212324).

The spelling of 202012210002122 in words is "two hundred two trillion, twelve billion, two hundred ten million, two thousand, one hundred twenty-two".