121401400013 has 4 divisors (see below), whose sum is σ = 122274791520. Its totient is φ = 120528008508.

The previous prime is 121401399967. The next prime is 121401400063. The reversal of 121401400013 is 310004104121.

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 121401400013 - 2¹⁴ = 121401383629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121401399964 and 121401400000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121401400063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436695545 + ... + 436695822.

It is an arithmetic number, because the mean of its divisors is an integer number (30568697880).

Almost surely, 2^121401400013 is an apocalyptic number.

It is an amenable number.

121401400013 is a deficient number, since it is larger than the sum of its proper divisors (873391507).

121401400013 is an equidigital number, since it uses as much as digits as its factorization.

121401400013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873391506.

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

Adding to 121401400013 its reverse (310004104121), we get a palindrome (431405504134).

The spelling of 121401400013 in words is "one hundred twenty-one billion, four hundred one million, four hundred thousand, thirteen".