20021121010122 has 16 divisors (see below), whose sum is σ = 40061651760000. Its totient is φ = 6670472046752.

The previous prime is 20021121010097. The next prime is 20021121010171. The reversal of 20021121010122 is 22101012112002.

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, 808725747 + ... + 808750502.

It is an arithmetic number, because the mean of its divisors is an integer number (2503853235000).

Almost surely, 2^{20021121010122} is an apocalyptic number.

20021121010122 is an abundant number, since it is smaller than the sum of its proper divisors (20040530749878).

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

20021121010122 is a wasteful number, since it uses less digits than its factorization.

20021121010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617478317.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021121010122 its reverse (22101012112002), we get a palindrome (42122133122124).

The spelling of 20021121010122 in words is "twenty trillion, twenty-one billion, one hundred twenty-one million, ten thousand, one hundred twenty-two".