121131230001 has 16 divisors (see below), whose sum is σ = 161892161280. Its totient is φ = 80562303360.

The previous prime is 121131229981. The next prime is 121131230027. The reversal of 121131230001 is 100032131121.

It is a happy number.

It is not a de Polignac number, because 121131230001 - 2⁹ = 121131229489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121131230201) 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, 11230231 + ... + 11241011.

It is an arithmetic number, because the mean of its divisors is an integer number (10118260080).

Almost surely, 2^121131230001 is an apocalyptic number.

It is an amenable number.

121131230001 is a deficient number, since it is larger than the sum of its proper divisors (40760931279).

121131230001 is a wasteful number, since it uses less digits than its factorization.

121131230001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19336.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 121131230001 its reverse (100032131121), we get a palindrome (221163361122).

The spelling of 121131230001 in words is "one hundred twenty-one billion, one hundred thirty-one million, two hundred thirty thousand, one".