242225122531 has 16 divisors (see below), whose sum is σ = 277303910400. Its totient is φ = 207265356000.

The previous prime is 242225122511. The next prime is 242225122537. The reversal of 242225122531 is 135221522242.

It is a cyclic number.

It is not a de Polignac number, because 242225122531 - 2⁹ = 242225122019 is a prime.

It is a super-2 number, since 2×242225122531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242225122493 and 242225122502.

It is not an unprimeable number, because it can be changed into a prime (242225122537) 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, 16641645 + ... + 16656193.

It is an arithmetic number, because the mean of its divisors is an integer number (17331494400).

Almost surely, 2^242225122531 is an apocalyptic number.

242225122531 is a deficient number, since it is larger than the sum of its proper divisors (35078787869).

242225122531 is a wasteful number, since it uses less digits than its factorization.

242225122531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18474.

The product of its digits is 19200, while the sum is 31.

Adding to 242225122531 its reverse (135221522242), we get a palindrome (377446644773).

The spelling of 242225122531 in words is "two hundred forty-two billion, two hundred twenty-five million, one hundred twenty-two thousand, five hundred thirty-one".