1222031331 has 12 divisors (see below), whose sum is σ = 1841902608. Its totient is φ = 779266224.

The previous prime is 1222031311. The next prime is 1222031347. The reversal of 1222031331 is 1331302221.

It is not a de Polignac number, because 1222031331 - 2⁵ = 1222031299 is a prime.

It is a super-2 number, since 2×1222031331² = 2986721147891263122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222031311) 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, 2951560 + ... + 2951973.

It is an arithmetic number, because the mean of its divisors is an integer number (153491884).

Almost surely, 2^1222031331 is an apocalyptic number.

1222031331 is a deficient number, since it is larger than the sum of its proper divisors (619871277).

1222031331 is a wasteful number, since it uses less digits than its factorization.

1222031331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903562 (or 5903559 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1222031331 is about 34957.5647178118. The cubic root of 1222031331 is about 1069.1224443597.

Adding to 1222031331 its reverse (1331302221), we get a palindrome (2553333552).

The spelling of 1222031331 in words is "one billion, two hundred twenty-two million, thirty-one thousand, three hundred thirty-one".