20212102202122 has 16 divisors (see below), whose sum is σ = 30427924681440. Its totient is φ = 10069461408528.

The previous prime is 20212102202111. The next prime is 20212102202143. The reversal of 20212102202122 is 22120220121202.

It is a self number, because there is not a number n which added to its sum of digits gives 20212102202122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97814629 + ... + 98021047.

It is an arithmetic number, because the mean of its divisors is an integer number (1901745292590).

Almost surely, 2^{20212102202122} is an apocalyptic number.

20212102202122 is a deficient number, since it is larger than the sum of its proper divisors (10215822479318).

20212102202122 is a wasteful number, since it uses less digits than its factorization.

20212102202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383445.

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

Adding to 20212102202122 its reverse (22120220121202), we get a palindrome (42332322323324).

The spelling of 20212102202122 in words is "twenty trillion, two hundred twelve billion, one hundred two million, two hundred two thousand, one hundred twenty-two".