1321261124 has 12 divisors (see below), whose sum is σ = 2312482704. Its totient is φ = 660551784.

The previous prime is 1321261103. The next prime is 1321261127. The reversal of 1321261124 is 4211621231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321261124.

It is not an unprimeable number, because it can be changed into a prime (1321261127) 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, 34787 + ... + 62069.

It is an arithmetic number, because the mean of its divisors is an integer number (192706892).

Almost surely, 2^1321261124 is an apocalyptic number.

It is an amenable number.

1321261124 is a deficient number, since it is larger than the sum of its proper divisors (991221580).

1321261124 is a wasteful number, since it uses less digits than its factorization.

1321261124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39394 (or 39392 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1321261124 is about 36349.1557536073. The cubic root of 1321261124 is about 1097.3105437953.

Adding to 1321261124 its reverse (4211621231), we get a palindrome (5532882355).

The spelling of 1321261124 in words is "one billion, three hundred twenty-one million, two hundred sixty-one thousand, one hundred twenty-four".