222311313021 has 16 divisors (see below), whose sum is σ = 340165747328. Its totient is φ = 126507916800.

The previous prime is 222311313011. The next prime is 222311313023. The reversal of 222311313021 is 120313113222.

It is not a de Polignac number, because 222311313021 - 2¹⁰ = 222311311997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222311313023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21958120 + ... + 21968241.

It is an arithmetic number, because the mean of its divisors is an integer number (21260359208).

Almost surely, 2^222311313021 is an apocalyptic number.

222311313021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222311313021 is a deficient number, since it is larger than the sum of its proper divisors (117854434307).

222311313021 is a wasteful number, since it uses less digits than its factorization.

222311313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43926612.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 222311313021 its reverse (120313113222), we get a palindrome (342624426243).

The spelling of 222311313021 in words is "two hundred twenty-two billion, three hundred eleven million, three hundred thirteen thousand, twenty-one".