121310440001 has 4 divisors (see below), whose sum is σ = 121326607152. Its totient is φ = 121294272852.

The previous prime is 121310439973. The next prime is 121310440039. The reversal of 121310440001 is 100044013121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121310440001 - 2²⁶ = 121243331137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121310440051) 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, 8072315 + ... + 8087328.

It is an arithmetic number, because the mean of its divisors is an integer number (30331651788).

Almost surely, 2^121310440001 is an apocalyptic number.

It is an amenable number.

121310440001 is a deficient number, since it is larger than the sum of its proper divisors (16167151).

121310440001 is an equidigital number, since it uses as much as digits as its factorization.

121310440001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16167150.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121310440001 its reverse (100044013121), we get a palindrome (221354453122).

The spelling of 121310440001 in words is "one hundred twenty-one billion, three hundred ten million, four hundred forty thousand, one".