222202012020121 has 4 divisors (see below), whose sum is σ = 253945156594432. Its totient is φ = 190458867445812.

The previous prime is 222202012020113. The next prime is 222202012020137. The reversal of 222202012020121 is 121020210202222.

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 not a de Polignac number, because 222202012020121 - 2³ = 222202012020113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222202012020181) 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, 15871572287145 + ... + 15871572287158.

It is an arithmetic number, because the mean of its divisors is an integer number (63486289148608).

Almost surely, 2^{222202012020121} is an apocalyptic number.

It is an amenable number.

222202012020121 is a deficient number, since it is larger than the sum of its proper divisors (31743144574311).

222202012020121 is an equidigital number, since it uses as much as digits as its factorization.

222202012020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31743144574310.

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

Adding to 222202012020121 its reverse (121020210202222), we get a palindrome (343222222222343).

The spelling of 222202012020121 in words is "two hundred twenty-two trillion, two hundred two billion, twelve million, twenty thousand, one hundred twenty-one".