20210111100199 has 4 divisors (see below), whose sum is σ = 20214655766464. Its totient is φ = 20205566433936.

The previous prime is 20210111100181. The next prime is 20210111100217. The reversal of 20210111100199 is 99100111101202.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (20210111100181) and next prime (20210111100217).

It is a cyclic number.

It is not a de Polignac number, because 20210111100199 - 2²⁷ = 20209976882471 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 (20210111100169) 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, 2272326462 + ... + 2272335355.

It is an arithmetic number, because the mean of its divisors is an integer number (5053663941616).

Almost surely, 2^{20210111100199} is an apocalyptic number.

20210111100199 is a deficient number, since it is larger than the sum of its proper divisors (4544666265).

20210111100199 is an equidigital number, since it uses as much as digits as its factorization.

20210111100199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544666264.

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 20210111100199 in words is "twenty trillion, two hundred ten billion, one hundred eleven million, one hundred thousand, one hundred ninety-nine".