20220120210999 has 16 divisors (see below), whose sum is σ = 27058161789824. Its totient is φ = 13431148164000.

The previous prime is 20220120210973. The next prime is 20220120211037. The reversal of 20220120210999 is 99901202102202.

It is a de Polignac number, because none of the positive numbers 2^k-20220120210999 is a prime.

It is a super-2 number, since 2×20220120210999² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220120210919) 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, 7420417 + ... + 9772554.

It is an arithmetic number, because the mean of its divisors is an integer number (1691135111864).

Almost surely, 2^{20220120210999} is an apocalyptic number.

20220120210999 is a deficient number, since it is larger than the sum of its proper divisors (6838041578825).

20220120210999 is a wasteful number, since it uses less digits than its factorization.

20220120210999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17194398.

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 20220120210999 in words is "twenty trillion, two hundred twenty billion, one hundred twenty million, two hundred ten thousand, nine hundred ninety-nine".