1203111331401 has 16 divisors (see below), whose sum is σ = 1834715234304. Its totient is φ = 686966165904.

The previous prime is 1203111331391. The next prime is 1203111331417. The reversal of 1203111331401 is 1041331113021.

It is not a de Polignac number, because 1203111331401 - 2⁵ = 1203111331369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1203111331421) 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, 21889545 + ... + 21944438.

It is an arithmetic number, because the mean of its divisors is an integer number (114669702144).

Almost surely, 2^{1203111331401} is an apocalyptic number.

It is an amenable number.

1203111331401 is a deficient number, since it is larger than the sum of its proper divisors (631603902903).

1203111331401 is a wasteful number, since it uses less digits than its factorization.

1203111331401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43835300.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1203111331401 its reverse (1041331113021), we get a palindrome (2244442444422).

The spelling of 1203111331401 in words is "one trillion, two hundred three billion, one hundred eleven million, three hundred thirty-one thousand, four hundred one".