20101220002122 has 32 divisors (see below), whose sum is σ = 45958913636352. Its totient is φ = 5741547225264.

The previous prime is 20101220002099. The next prime is 20101220002141. The reversal of 20101220002122 is 22120002210102.

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 15 ways as a sum of consecutive naturals, for example, 68956558 + ... + 69247449.

It is an arithmetic number, because the mean of its divisors is an integer number (1436216051136).

Almost surely, 2^{20101220002122} is an apocalyptic number.

20101220002122 is an abundant number, since it is smaller than the sum of its proper divisors (25857693634230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101220002122 is a wasteful number, since it uses less digits than its factorization.

20101220002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138207482.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20101220002122 its reverse (22120002210102), we get a palindrome (42221222212224).

The spelling of 20101220002122 in words is "twenty trillion, one hundred one billion, two hundred twenty million, two thousand, one hundred twenty-two".