1201123231203 has 16 divisors (see below), whose sum is σ = 1834104084480. Its totient is φ = 684923232576.

The previous prime is 1201123231193. The next prime is 1201123231279. The reversal of 1201123231203 is 3021323211021.

It is not a de Polignac number, because 1201123231203 - 2⁹ = 1201123230691 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1201123231203.

It is not an unprimeable number, because it can be changed into a prime (1201123231283) 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, 59693850 + ... + 59713967.

It is an arithmetic number, because the mean of its divisors is an integer number (114631505280).

Almost surely, 2^{1201123231203} is an apocalyptic number.

1201123231203 is a deficient number, since it is larger than the sum of its proper divisors (632980853277).

1201123231203 is a wasteful number, since it uses less digits than its factorization.

1201123231203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119408306.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1201123231203 its reverse (3021323211021), we get a palindrome (4222446442224).

The spelling of 1201123231203 in words is "one trillion, two hundred one billion, one hundred twenty-three million, two hundred thirty-one thousand, two hundred three".