2111222101121 has 48 divisors (see below), whose sum is σ = 2505286143360. Its totient is φ = 1773567936000.

The previous prime is 2111222101111. The next prime is 2111222101123. The reversal of 2111222101121 is 1211012221112.

It is a de Polignac number, because none of the positive numbers 2^k-2111222101121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111222101121.

It is not an unprimeable number, because it can be changed into a prime (2111222101123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 552529391 + ... + 552533211.

It is an arithmetic number, because the mean of its divisors is an integer number (52193461320).

Almost surely, 2^{2111222101121} is an apocalyptic number.

It is an amenable number.

2111222101121 is a deficient number, since it is larger than the sum of its proper divisors (394064042239).

2111222101121 is a wasteful number, since it uses less digits than its factorization.

2111222101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806 (or 4799 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2111222101121 its reverse (1211012221112), we get a palindrome (3322234322233).

The spelling of 2111222101121 in words is "two trillion, one hundred eleven billion, two hundred twenty-two million, one hundred one thousand, one hundred twenty-one".