20220121199999 has 32 divisors (see below), whose sum is σ = 23310802944000. Its totient is φ = 17180268225120.

The previous prime is 20220121199987. The next prime is 20220121200001. The reversal of 20220121199999 is 99999112102202.

It is not a de Polignac number, because 20220121199999 - 2⁴⁰ = 19120609572223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220121199969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5031130412 + ... + 5031134430.

It is an arithmetic number, because the mean of its divisors is an integer number (728462592000).

Almost surely, 2^{20220121199999} is an apocalyptic number.

20220121199999 is a deficient number, since it is larger than the sum of its proper divisors (3090681744001).

20220121199999 is a wasteful number, since it uses less digits than its factorization.

20220121199999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8843.

The product of its (nonzero) digits is 944784, while the sum is 56.

The spelling of 20220121199999 in words is "twenty trillion, two hundred twenty billion, one hundred twenty-one million, one hundred ninety-nine thousand, nine hundred ninety-nine".