2202221022121 has 4 divisors (see below), whose sum is σ = 2203047994752. Its totient is φ = 2201394049492.

The previous prime is 2202221022083. The next prime is 2202221022167. The reversal of 2202221022121 is 1212201222022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2202221022121 - 2⁷ = 2202221021993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2202221020121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413482321 + ... + 413487646.

It is an arithmetic number, because the mean of its divisors is an integer number (550761998688).

Almost surely, 2^{2202221022121} is an apocalyptic number.

It is an amenable number.

2202221022121 is a deficient number, since it is larger than the sum of its proper divisors (826972631).

2202221022121 is an equidigital number, since it uses as much as digits as its factorization.

2202221022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826972630.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2202221022121 its reverse (1212201222022), we get a palindrome (3414422244143).

The spelling of 2202221022121 in words is "two trillion, two hundred two billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-one".