20100121010022 has 32 divisors (see below), whose sum is σ = 40210668186624. Its totient is φ = 6698302872800.

The previous prime is 20100121009999. The next prime is 20100121010027. The reversal of 20100121010022 is 22001012100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100121010027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555371947 + ... + 555408137.

It is an arithmetic number, because the mean of its divisors is an integer number (1256583380832).

Almost surely, 2^{20100121010022} is an apocalyptic number.

20100121010022 is an abundant number, since it is smaller than the sum of its proper divisors (20110547176602).

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

20100121010022 is a wasteful number, since it uses less digits than its factorization.

20100121010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57644.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20100121010022 its reverse (22001012100102), we get a palindrome (42101133110124).

The spelling of 20100121010022 in words is "twenty trillion, one hundred billion, one hundred twenty-one million, ten thousand, twenty-two".