2221210211121 has 12 divisors (see below), whose sum is σ = 3500088817680. Its totient is φ = 1346188006680.

The previous prime is 2221210211063. The next prime is 2221210211141. The reversal of 2221210211121 is 1211120121222.

2221210211121 is a `hidden beast` number, since 2 + 221 + 210 + 211 + 1 + 21 = 666.

It is not a de Polignac number, because 2221210211121 - 2⁶ = 2221210211057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221210211094 and 2221210211103.

It is not an unprimeable number, because it can be changed into a prime (2221210211141) 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, 11218233291 + ... + 11218233488.

It is an arithmetic number, because the mean of its divisors is an integer number (291674068140).

Almost surely, 2^{2221210211121} is an apocalyptic number.

It is an amenable number.

2221210211121 is a deficient number, since it is larger than the sum of its proper divisors (1278878606559).

2221210211121 is a wasteful number, since it uses less digits than its factorization.

2221210211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22436466796 (or 22436466793 counting only the distinct ones).

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

Adding to 2221210211121 its reverse (1211120121222), we get a palindrome (3432330332343).

The spelling of 2221210211121 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, two hundred eleven thousand, one hundred twenty-one".