121231001303 has 4 divisors (see below), whose sum is σ = 122103166920. Its totient is φ = 120358835688.

The previous prime is 121231001267. The next prime is 121231001327. The reversal of 121231001303 is 303100132121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121231001303 - 2²⁸ = 120962565847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121231001503) 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, 436082600 + ... + 436082877.

It is an arithmetic number, because the mean of its divisors is an integer number (30525791730).

Almost surely, 2^121231001303 is an apocalyptic number.

121231001303 is a deficient number, since it is larger than the sum of its proper divisors (872165617).

121231001303 is an equidigital number, since it uses as much as digits as its factorization.

121231001303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872165616.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 121231001303 its reverse (303100132121), we get a palindrome (424331133424).

The spelling of 121231001303 in words is "one hundred twenty-one billion, two hundred thirty-one million, one thousand, three hundred three".