222222012121001 has 4 divisors (see below), whose sum is σ = 223007248913232. Its totient is φ = 221436775328772.

The previous prime is 222222012120971. The next prime is 222222012121037. The reversal of 222222012121001 is 100121210222222.

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 a de Polignac number, because none of the positive numbers 2^k-222222012121001 is a prime.

It is a super-2 number, since 2×222222012121001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222222012121061) 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, 392618395691 + ... + 392618396256.

It is an arithmetic number, because the mean of its divisors is an integer number (55751812228308).

Almost surely, 2^{222222012121001} is an apocalyptic number.

It is an amenable number.

222222012121001 is a deficient number, since it is larger than the sum of its proper divisors (785236792231).

222222012121001 is an equidigital number, since it uses as much as digits as its factorization.

222222012121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785236792230.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222222012121001 its reverse (100121210222222), we get a palindrome (322343222343223).

The spelling of 222222012121001 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, twelve million, one hundred twenty-one thousand, one".