121330213401 has 4 divisors (see below), whose sum is σ = 161773617872. Its totient is φ = 80886808932.

The previous prime is 121330213343. The next prime is 121330213421. The reversal of 121330213401 is 104312033121.

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 not a de Polignac number, because 121330213401 - 2²⁵ = 121296658969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121330213421) 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, 20221702231 + ... + 20221702236.

It is an arithmetic number, because the mean of its divisors is an integer number (40443404468).

Almost surely, 2^121330213401 is an apocalyptic number.

It is an amenable number.

121330213401 is a deficient number, since it is larger than the sum of its proper divisors (40443404471).

121330213401 is an equidigital number, since it uses as much as digits as its factorization.

121330213401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40443404470.

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

Adding to 121330213401 its reverse (104312033121), we get a palindrome (225642246522).

The spelling of 121330213401 in words is "one hundred twenty-one billion, three hundred thirty million, two hundred thirteen thousand, four hundred one".