20002121112199 has 4 divisors (see below), whose sum is σ = 20002471352640. Its totient is φ = 20001770871760.

The previous prime is 20002121112173. The next prime is 20002121112343. The reversal of 20002121112199 is 99121112120002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20002121112199 - 2¹⁵ = 20002121079431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20002121112199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002121112139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175034542 + ... + 175148779.

It is an arithmetic number, because the mean of its divisors is an integer number (5000617838160).

Almost surely, 2^{20002121112199} is an apocalyptic number.

20002121112199 is a deficient number, since it is larger than the sum of its proper divisors (350240441).

20002121112199 is an equidigital number, since it uses as much as digits as its factorization.

20002121112199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350240440.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 20002121112199 in words is "twenty trillion, two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred ninety-nine".