2212002121021 has 48 divisors (see below), whose sum is σ = 2852570234880. Its totient is φ = 1695799644000.

The previous prime is 2212002121001. The next prime is 2212002121027. The reversal of 2212002121021 is 1201212002122.

It is a happy number.

It is not a de Polignac number, because 2212002121021 - 2⁷ = 2212002120893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212002120986 and 2212002121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212002121027) 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, 18270516 + ... + 18391186.

It is an arithmetic number, because the mean of its divisors is an integer number (59428546560).

Almost surely, 2^{2212002121021} is an apocalyptic number.

It is an amenable number.

2212002121021 is a deficient number, since it is larger than the sum of its proper divisors (640568113859).

2212002121021 is a wasteful number, since it uses less digits than its factorization.

2212002121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121246 (or 121239 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2212002121021 its reverse (1201212002122), we get a palindrome (3413214123143).

The spelling of 2212002121021 in words is "two trillion, two hundred twelve billion, two million, one hundred twenty-one thousand, twenty-one".