1312220022 has 16 divisors (see below), whose sum is σ = 2695371312. Its totient is φ = 425584800.

The previous prime is 1312219999. The next prime is 1312220029. The reversal of 1312220022 is 2200222131.

It is a happy number.

It is a super-2 number, since 2×1312220022² = 3443842772275360968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312219983 and 1312220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312220029) 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, 2955229 + ... + 2955672.

It is an arithmetic number, because the mean of its divisors is an integer number (168460707).

Almost surely, 2^1312220022 is an apocalyptic number.

1312220022 is an abundant number, since it is smaller than the sum of its proper divisors (1383151290).

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

1312220022 is a wasteful number, since it uses less digits than its factorization.

1312220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5910943.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1312220022 is about 36224.5775958809. The cubic root of 1312220022 is about 1094.8019274350.

Adding to 1312220022 its reverse (2200222131), we get a palindrome (3512442153).

The spelling of 1312220022 in words is "one billion, three hundred twelve million, two hundred twenty thousand, twenty-two".