2111102120121 has 32 divisors (see below), whose sum is σ = 2917070807040. Its totient is φ = 1356632217600.

The previous prime is 2111102120093. The next prime is 2111102120159. The reversal of 2111102120121 is 1210212011112.

It is a happy number.

It is not a de Polignac number, because 2111102120121 - 2⁷ = 2111102119993 is a prime.

It is a super-2 number, since 2×2111102120121² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2111102120121.

It is not an unprimeable number, because it can be changed into a prime (2111102124121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40726606 + ... + 40778408.

It is an arithmetic number, because the mean of its divisors is an integer number (91158462720).

Almost surely, 2^{2111102120121} is an apocalyptic number.

It is an amenable number.

2111102120121 is a deficient number, since it is larger than the sum of its proper divisors (805968686919).

2111102120121 is a wasteful number, since it uses less digits than its factorization.

2111102120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53557.

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

Adding to 2111102120121 its reverse (1210212011112), we get a palindrome (3321314131233).

The spelling of 2111102120121 in words is "two trillion, one hundred eleven billion, one hundred two million, one hundred twenty thousand, one hundred twenty-one".