121210400013 has 8 divisors (see below), whose sum is σ = 161779289088. Its totient is φ = 80724222144.

The previous prime is 121210399943. The next prime is 121210400021. The reversal of 121210400013 is 310004012121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121210400013 - 2⁹ = 121210399501 is a prime.

It is a super-2 number, since 2×121210400013² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121210399965 and 121210400001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210400033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20674381 + ... + 20680242.

It is an arithmetic number, because the mean of its divisors is an integer number (20222411136).

Almost surely, 2^121210400013 is an apocalyptic number.

It is an amenable number.

121210400013 is a deficient number, since it is larger than the sum of its proper divisors (40568889075).

121210400013 is an equidigital number, since it uses as much as digits as its factorization.

121210400013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41355603.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121210400013 its reverse (310004012121), we get a palindrome (431214412134).

The spelling of 121210400013 in words is "one hundred twenty-one billion, two hundred ten million, four hundred thousand, thirteen".