1321201231124 has 96 divisors (see below), whose sum is σ = 2501579759616. Its totient is φ = 609013180160.

The previous prime is 1321201231093. The next prime is 1321201231127. The reversal of 1321201231124 is 4211321021231.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 1321201231124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321201231127) 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, 336781427 + ... + 336785349.

It is an arithmetic number, because the mean of its divisors is an integer number (26058122496).

Almost surely, 2^{1321201231124} is an apocalyptic number.

It is an amenable number.

1321201231124 is a deficient number, since it is larger than the sum of its proper divisors (1180378528492).

1321201231124 is a wasteful number, since it uses less digits than its factorization.

1321201231124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165 (or 5163 counting only the distinct ones).

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

Adding to 1321201231124 its reverse (4211321021231), we get a palindrome (5532522252355).

The spelling of 1321201231124 in words is "one trillion, three hundred twenty-one billion, two hundred one million, two hundred thirty-one thousand, one hundred twenty-four".