2111010122121 has 16 divisors (see below), whose sum is σ = 2856769491264. Its totient is φ = 1386296581824.

The previous prime is 2111010122113. The next prime is 2111010122129. The reversal of 2111010122121 is 1212210101112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2111010122113) and next prime (2111010122129).

It is not a de Polignac number, because 2111010122121 - 2³ = 2111010122113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111010122121.

It is not an unprimeable number, because it can be changed into a prime (2111010122129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8357151 + ... + 8606043.

It is an arithmetic number, because the mean of its divisors is an integer number (178548093204).

Almost surely, 2^{2111010122121} is an apocalyptic number.

It is an amenable number.

2111010122121 is a deficient number, since it is larger than the sum of its proper divisors (745759369143).

2111010122121 is a wasteful number, since it uses less digits than its factorization.

2111010122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291160.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2111010122121 its reverse (1212210101112), we get a palindrome (3323220223233).

The spelling of 2111010122121 in words is "two trillion, one hundred eleven billion, ten million, one hundred twenty-two thousand, one hundred twenty-one".