1321203400124 has 24 divisors (see below), whose sum is σ = 2367337674240. Its totient is φ = 644840192304.

The previous prime is 1321203400109. The next prime is 1321203400169. The reversal of 1321203400124 is 4210043021231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321203400124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2093804 + ... + 2650739.

It is an arithmetic number, because the mean of its divisors is an integer number (98639069760).

Almost surely, 2^{1321203400124} is an apocalyptic number.

It is an amenable number.

1321203400124 is a deficient number, since it is larger than the sum of its proper divisors (1046134274116).

1321203400124 is a wasteful number, since it uses less digits than its factorization.

1321203400124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746209 (or 4746207 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1321203400124 its reverse (4210043021231), we get a palindrome (5531246421355).

The spelling of 1321203400124 in words is "one trillion, three hundred twenty-one billion, two hundred three million, four hundred thousand, one hundred twenty-four".