1222240131 has 32 divisors (see below), whose sum is σ = 2136166400. Its totient is φ = 675889920.

The previous prime is 1222240093. The next prime is 1222240153. The reversal of 1222240131 is 1310422221.

It is a happy number.

1222240131 is a `hidden beast` number, since 12 + 222 + 401 + 31 = 666.

1222240131 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1222240131 - 2⁶ = 1222240067 is a prime.

It is a super-2 number, since 2×1222240131² = 2987741875653794322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222250131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98446 + ... + 110163.

It is an arithmetic number, because the mean of its divisors is an integer number (66755200).

Almost surely, 2^1222240131 is an apocalyptic number.

1222240131 is a deficient number, since it is larger than the sum of its proper divisors (913926269).

1222240131 is a wasteful number, since it uses less digits than its factorization.

1222240131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208656 (or 208650 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1222240131 is about 34960.5510683113. The cubic root of 1222240131 is about 1069.1833320658.

Adding to 1222240131 its reverse (1310422221), we get a palindrome (2532662352).

The spelling of 1222240131 in words is "one billion, two hundred twenty-two million, two hundred forty thousand, one hundred thirty-one".