2212210022121 has 56 divisors (see below), whose sum is σ = 3695311073664. Its totient is φ = 1312206881760.

The previous prime is 2212210022101. The next prime is 2212210022129. The reversal of 2212210022121 is 1212200122122.

It is a happy number.

2212210022121 is a `hidden beast` number, since 2 + 212 + 210 + 0 + 221 + 21 = 666.

It is not a de Polignac number, because 2212210022121 - 2¹⁷ = 2212209891049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212210022094 and 2212210022103.

It is not an unprimeable number, because it can be changed into a prime (2212210022129) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2557906 + ... + 3311691.

It is an arithmetic number, because the mean of its divisors is an integer number (65987697744).

Almost surely, 2^{2212210022121} is an apocalyptic number.

It is an amenable number.

2212210022121 is a deficient number, since it is larger than the sum of its proper divisors (1483101051543).

2212210022121 is an equidigital number, since it uses as much as digits as its factorization.

2212210022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5869673 (or 5869658 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212210022121 its reverse (1212200122122), we get a palindrome (3424410144243).

The spelling of 2212210022121 in words is "two trillion, two hundred twelve billion, two hundred ten million, twenty-two thousand, one hundred twenty-one".