2111222102121 has 12 divisors (see below), whose sum is σ = 3326774221680. Its totient is φ = 1279528546680.

The previous prime is 2111222102053. The next prime is 2111222102131. The reversal of 2111222102121 is 1212012221112.

2111222102121 is a `hidden beast` number, since 211 + 122 + 210 + 2 + 121 = 666.

It is not a de Polignac number, because 2111222102121 - 2⁷ = 2111222101993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111222102094 and 2111222102103.

It is not an unprimeable number, because it can be changed into a prime (2111222102131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10662737791 + ... + 10662737988.

It is an arithmetic number, because the mean of its divisors is an integer number (277231185140).

Almost surely, 2^{2111222102121} is an apocalyptic number.

It is an amenable number.

2111222102121 is a deficient number, since it is larger than the sum of its proper divisors (1215552119559).

2111222102121 is a wasteful number, since it uses less digits than its factorization.

2111222102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21325475796 (or 21325475793 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2111222102121 its reverse (1212012221112), we get a palindrome (3323234323233).

The spelling of 2111222102121 in words is "two trillion, one hundred eleven billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty-one".