20102111220122 has 16 divisors (see below), whose sum is σ = 30163638477312. Its totient is φ = 10047565295040.

The previous prime is 20102111220041. The next prime is 20102111220137. The reversal of 20102111220122 is 22102211120102.

It is a self number, because there is not a number n which added to its sum of digits gives 20102111220122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297673853 + ... + 297741375.

It is an arithmetic number, because the mean of its divisors is an integer number (1885227404832).

Almost surely, 2^{20102111220122} is an apocalyptic number.

20102111220122 is a deficient number, since it is larger than the sum of its proper divisors (10061527257190).

20102111220122 is a wasteful number, since it uses less digits than its factorization.

20102111220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117013.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20102111220122 its reverse (22102211120102), we get a palindrome (42204322340224).

The spelling of 20102111220122 in words is "twenty trillion, one hundred two billion, one hundred eleven million, two hundred twenty thousand, one hundred twenty-two".