2122011221121 has 24 divisors (see below), whose sum is σ = 3351717782400. Its totient is φ = 1283012589600.

The previous prime is 2122011221111. The next prime is 2122011221159. The reversal of 2122011221121 is 1211221102212.

It is not a de Polignac number, because 2122011221121 - 2¹⁴ = 2122011204737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122011221094 and 2122011221103.

It is not an unprimeable number, because it can be changed into a prime (2122011221111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25414921 + ... + 25498278.

It is an arithmetic number, because the mean of its divisors is an integer number (139654907600).

Almost surely, 2^{2122011221121} is an apocalyptic number.

It is an amenable number.

2122011221121 is a deficient number, since it is larger than the sum of its proper divisors (1229706561279).

2122011221121 is a wasteful number, since it uses less digits than its factorization.

2122011221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50913637 (or 50913634 counting only the distinct ones).

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

Adding to 2122011221121 its reverse (1211221102212), we get a palindrome (3333232323333).

The spelling of 2122011221121 in words is "two trillion, one hundred twenty-two billion, eleven million, two hundred twenty-one thousand, one hundred twenty-one".