1222133431 has 16 divisors (see below), whose sum is σ = 1250536320. Its totient is φ = 1194188800.

The previous prime is 1222133377. The next prime is 1222133459. The reversal of 1222133431 is 1343312221.

It is a cyclic number.

It is not a de Polignac number, because 1222133431 - 2⁷ = 1222133303 is a prime.

It is a super-4 number, since 4×1222133431⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222133461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4755255 + ... + 4755511.

It is an arithmetic number, because the mean of its divisors is an integer number (78158520).

Almost surely, 2^1222133431 is an apocalyptic number.

1222133431 is a deficient number, since it is larger than the sum of its proper divisors (28402889).

1222133431 is a wasteful number, since it uses less digits than its factorization.

1222133431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its digits is 864, while the sum is 22.

The square root of 1222133431 is about 34959.0250293111. The cubic root of 1222133431 is about 1069.1522183813.

Adding to 1222133431 its reverse (1343312221), we get a palindrome (2565445652).

The spelling of 1222133431 in words is "one billion, two hundred twenty-two million, one hundred thirty-three thousand, four hundred thirty-one".