222331212121013 has 4 divisors (see below), whose sum is σ = 222623368773708. Its totient is φ = 222039055468320.

The previous prime is 222331212120991. The next prime is 222331212121027. The reversal of 222331212121013 is 310121212133222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63438708084964 + 158892504036049 = 7964842^2 + 12605257^2 .

It is a cyclic number.

It is not a de Polignac number, because 222331212121013 - 2¹⁴ = 222331212104629 is a prime.

It is a super-2 number, since 2×222331212121013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222331212121033) 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, 146078325206 + ... + 146078326727.

It is an arithmetic number, because the mean of its divisors is an integer number (55655842193427).

Almost surely, 2^{222331212121013} is an apocalyptic number.

It is an amenable number.

222331212121013 is a deficient number, since it is larger than the sum of its proper divisors (292156652695).

222331212121013 is an equidigital number, since it uses as much as digits as its factorization.

222331212121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292156652694.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 222331212121013 its reverse (310121212133222), we get a palindrome (532452424254235).

The spelling of 222331212121013 in words is "two hundred twenty-two trillion, three hundred thirty-one billion, two hundred twelve million, one hundred twenty-one thousand, thirteen".