1320312222 has 24 divisors (see below), whose sum is σ = 2861699880. Its totient is φ = 439946640.

The previous prime is 1320312221. The next prime is 1320312233. The reversal of 1320312222 is 2222130231.

1320312222 is a `hidden beast` number, since 132 + 0 + 312 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1320312195 and 1320312204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320312221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45729 + ... + 68787.

It is an arithmetic number, because the mean of its divisors is an integer number (119237495).

Almost surely, 2^1320312222 is an apocalyptic number.

1320312222 is an abundant number, since it is smaller than the sum of its proper divisors (1541387658).

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

1320312222 is a wasteful number, since it uses less digits than its factorization.

1320312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26248 (or 26245 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1320312222 is about 36336.1008089751. The cubic root of 1320312222 is about 1097.0477924194.

Adding to 1320312222 its reverse (2222130231), we get a palindrome (3542442453).

It can be divided in two parts, 13203 and 12222, that added together give a triangular number (25425 = T₂₂₅).

The spelling of 1320312222 in words is "one billion, three hundred twenty million, three hundred twelve thousand, two hundred twenty-two".