1222540131 has 8 divisors (see below), whose sum is σ = 1630347264. Its totient is φ = 814879880.

The previous prime is 1222540097. The next prime is 1222540139. The reversal of 1222540131 is 1310452221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222540131 - 2²² = 1218345827 is a prime.

It is a super-2 number, since 2×1222540131² = 2989208743810994322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222540098 and 1222540107.

It is not an unprimeable number, because it can be changed into a prime (1222540139) 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, 15555 + ... + 51836.

It is an arithmetic number, because the mean of its divisors is an integer number (203793408).

Almost surely, 2^1222540131 is an apocalyptic number.

1222540131 is a deficient number, since it is larger than the sum of its proper divisors (407807133).

1222540131 is an equidigital number, since it uses as much as digits as its factorization.

1222540131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73441.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1222540131 is about 34964.8413552815. The cubic root of 1222540131 is about 1069.2708022641.

Adding to 1222540131 its reverse (1310452221), we get a palindrome (2532992352).

The spelling of 1222540131 in words is "one billion, two hundred twenty-two million, five hundred forty thousand, one hundred thirty-one".