312222102220 has 24 divisors (see below), whose sum is σ = 749333045664. Its totient is φ = 107047577856.

The previous prime is 312222102217. The next prime is 312222102229. The reversal of 312222102220 is 22201222213.

It is a super-2 number, since 2×312222102220² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312222102229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115078797 + ... + 1115079076.

It is an arithmetic number, because the mean of its divisors is an integer number (31222210236).

Almost surely, 2^312222102220 is an apocalyptic number.

It is an amenable number.

312222102220 is an abundant number, since it is smaller than the sum of its proper divisors (437110943444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312222102220 is a wasteful number, since it uses less digits than its factorization.

312222102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230157889 (or 2230157887 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 312222102220 its reverse (22201222213), we get a palindrome (334423324433).

The spelling of 312222102220 in words is "three hundred twelve billion, two hundred twenty-two million, one hundred two thousand, two hundred twenty".