222102111202021 has 4 divisors (see below), whose sum is σ = 222106941760000. Its totient is φ = 222097280644044.

The previous prime is 222102111201977. The next prime is 222102111202091. The reversal of 222102111202021 is 120202111201222.

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 222102111202021 - 2³⁵ = 222067751463653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222102111202021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102111202091) 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, 2415210021 + ... + 2415301978.

It is an arithmetic number, because the mean of its divisors is an integer number (55526735440000).

Almost surely, 2^{222102111202021} is an apocalyptic number.

It is an amenable number.

222102111202021 is a deficient number, since it is larger than the sum of its proper divisors (4830557979).

222102111202021 is an equidigital number, since it uses as much as digits as its factorization.

222102111202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830557978.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222102111202021 its reverse (120202111201222), we get a palindrome (342304222403243).

The spelling of 222102111202021 in words is "two hundred twenty-two trillion, one hundred two billion, one hundred eleven million, two hundred two thousand, twenty-one".