10211020111999 has 12 divisors (see below), whose sum is σ = 11881027728264. Its totient is φ = 8750164422384.

The previous prime is 10211020111987. The next prime is 10211020112009. The reversal of 10211020111999 is 99911102011201.

It is not a de Polignac number, because 10211020111999 - 2⁵ = 10211020111967 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 (10211020111099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25256097 + ... + 25657210.

It is an arithmetic number, because the mean of its divisors is an integer number (990085644022).

Almost surely, 2^{10211020111999} is an apocalyptic number.

10211020111999 is a deficient number, since it is larger than the sum of its proper divisors (1670007616265).

10211020111999 is an equidigital number, since it uses as much as digits as its factorization.

10211020111999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50917414 (or 50917407 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 37.

The spelling of 10211020111999 in words is "ten trillion, two hundred eleven billion, twenty million, one hundred eleven thousand, nine hundred ninety-nine".