2111100012021 has 64 divisors (see below), whose sum is σ = 3779634733056. Its totient is φ = 1012229222400.

The previous prime is 2111100012019. The next prime is 2111100012023. The reversal of 2111100012021 is 1202100011112.

It is an interprime number because it is at equal distance from previous prime (2111100012019) and next prime (2111100012023).

It is not a de Polignac number, because 2111100012021 - 2¹ = 2111100012019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111100011988 and 2111100012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111100012023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47836756 + ... + 47880866.

It is an arithmetic number, because the mean of its divisors is an integer number (59056792704).

Almost surely, 2^{2111100012021} is an apocalyptic number.

2111100012021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2111100012021 is a deficient number, since it is larger than the sum of its proper divisors (1668534721035).

2111100012021 is a wasteful number, since it uses less digits than its factorization.

2111100012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60082.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2111100012021 its reverse (1202100011112), we get a palindrome (3313200023133).

Subtracting from 2111100012021 its reverse (1202100011112), we obtain a palindrome (909000000909).

The spelling of 2111100012021 in words is "two trillion, one hundred eleven billion, one hundred million, twelve thousand, twenty-one".