1222510131 has 8 divisors (see below), whose sum is σ = 1811126160. Its totient is φ = 815006736.

The previous prime is 1222510129. The next prime is 1222510139. The reversal of 1222510131 is 1310152221.

1222510131 is a `hidden beast` number, since 1 + 2 + 22 + 510 + 131 = 666.

It is not a de Polignac number, because 1222510131 - 2¹ = 1222510129 is a prime.

It is a super-3 number, since 3×1222510131³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1222510139) 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, 22639050 + ... + 22639103.

It is an arithmetic number, because the mean of its divisors is an integer number (226390770).

Almost surely, 2^1222510131 is an apocalyptic number.

1222510131 is a deficient number, since it is larger than the sum of its proper divisors (588616029).

1222510131 is an equidigital number, since it uses as much as digits as its factorization.

1222510131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45278162 (or 45278156 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1222510131 is about 34964.4123502741. The cubic root of 1222510131 is about 1069.2620558883.

Adding to 1222510131 its reverse (1310152221), we get a palindrome (2532662352).

The spelling of 1222510131 in words is "one billion, two hundred twenty-two million, five hundred ten thousand, one hundred thirty-one".