312222221130 has 16 divisors (see below), whose sum is σ = 749333330784. Its totient is φ = 83259258960.

The previous prime is 312222221111. The next prime is 312222221131. The reversal of 312222221130 is 31122222213.

It is a super-3 number, since 3×312222221130³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312222221097 and 312222221106.

It is not an unprimeable number, because it can be changed into a prime (312222221131) 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, 5203703656 + ... + 5203703715.

It is an arithmetic number, because the mean of its divisors is an integer number (46833333174).

Almost surely, 2^312222221130 is an apocalyptic number.

312222221130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312222221130 is an abundant number, since it is smaller than the sum of its proper divisors (437111109654).

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

312222221130 is a wasteful number, since it uses less digits than its factorization.

312222221130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10407407381.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 312222221130 its reverse (31122222213), we get a palindrome (343344443343).

The spelling of 312222221130 in words is "three hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred thirty".