222121101311 has 4 divisors (see below), whose sum is σ = 225885865800. Its totient is φ = 218356336824.

The previous prime is 222121101283. The next prime is 222121101359. The reversal of 222121101311 is 113101121222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 222121101311 - 2¹⁰ = 222121100287 is a prime.

It is a super-2 number, since 2×222121101311² (a number of 23 digits) contains 22 as substring.

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 222121101311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121131311) 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, 1882382156 + ... + 1882382273.

It is an arithmetic number, because the mean of its divisors is an integer number (56471466450).

Almost surely, 2^222121101311 is an apocalyptic number.

222121101311 is a deficient number, since it is larger than the sum of its proper divisors (3764764489).

222121101311 is an equidigital number, since it uses as much as digits as its factorization.

222121101311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764764488.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 222121101311 its reverse (113101121222), we get a palindrome (335222222533).

The spelling of 222121101311 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred one thousand, three hundred eleven".