20021112121022 has 16 divisors (see below), whose sum is σ = 30843670514832. Its totient is φ = 9739894504320.

The previous prime is 20021112121007. The next prime is 20021112121033. The reversal of 20021112121022 is 22012121112002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5602553 + ... + 8451675.

It is an arithmetic number, because the mean of its divisors is an integer number (1927729407177).

Almost surely, 2^{20021112121022} is an apocalyptic number.

20021112121022 is a deficient number, since it is larger than the sum of its proper divisors (10822558393810).

20021112121022 is a wasteful number, since it uses less digits than its factorization.

20021112121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944123.

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

Adding to 20021112121022 its reverse (22012121112002), we get a palindrome (42033233233024).

The spelling of 20021112121022 in words is "twenty trillion, twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, twenty-two".