1222130131 has 4 divisors (see below), whose sum is σ = 1224124432. Its totient is φ = 1220135832.

The previous prime is 1222130113. The next prime is 1222130137. The reversal of 1222130131 is 1310312221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1310312221 = 809 ⋅1619669.

It is a cyclic number.

It is not a de Polignac number, because 1222130131 - 2⁷ = 1222130003 is a prime.

It is a super-2 number, since 2×1222130131² = 2987204114196154322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222130137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996231 + ... + 997456.

It is an arithmetic number, because the mean of its divisors is an integer number (306031108).

Almost surely, 2^1222130131 is an apocalyptic number.

1222130131 is a deficient number, since it is larger than the sum of its proper divisors (1994301).

1222130131 is an equidigital number, since it uses as much as digits as its factorization.

1222130131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994300.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1222130131 is about 34958.9778311666. The cubic root of 1222130131 is about 1069.1512560735.

Adding to 1222130131 its reverse (1310312221), we get a palindrome (2532442352).

The spelling of 1222130131 in words is "one billion, two hundred twenty-two million, one hundred thirty thousand, one hundred thirty-one".