1253221124 has 24 divisors (see below), whose sum is σ = 2235340800. Its totient is φ = 614600480.

The previous prime is 1253221121. The next prime is 1253221153. The reversal of 1253221124 is 4211223521.

It is a self number, because there is not a number n which added to its sum of digits gives 1253221124.

It is not an unprimeable number, because it can be changed into a prime (1253221121) 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, 103037 + ... + 114555.

It is an arithmetic number, because the mean of its divisors is an integer number (93139200).

Almost surely, 2^1253221124 is an apocalyptic number.

It is an amenable number.

1253221124 is a deficient number, since it is larger than the sum of its proper divisors (982119676).

1253221124 is a wasteful number, since it uses less digits than its factorization.

1253221124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12043 (or 12041 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 1253221124 is about 35400.8633228061. The cubic root of 1253221124 is about 1078.1418448607.

Adding to 1253221124 its reverse (4211223521), we get a palindrome (5464444645).

The spelling of 1253221124 in words is "one billion, two hundred fifty-three million, two hundred twenty-one thousand, one hundred twenty-four".