121421214213 has 32 divisors (see below), whose sum is σ = 175478317056. Its totient is φ = 74236947648.

The previous prime is 121421214163. The next prime is 121421214251. The reversal of 121421214213 is 312412124121.

It is not a de Polignac number, because 121421214213 - 2⁶ = 121421214149 is a prime.

It is a super-2 number, since 2×121421214213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121421214293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20076556 + ... + 20082602.

It is an arithmetic number, because the mean of its divisors is an integer number (5483697408).

Almost surely, 2^121421214213 is an apocalyptic number.

121421214213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121421214213 is a deficient number, since it is larger than the sum of its proper divisors (54057102843).

121421214213 is a wasteful number, since it uses less digits than its factorization.

121421214213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9313.

The product of its digits is 768, while the sum is 24.

Adding to 121421214213 its reverse (312412124121), we get a palindrome (433833338334).

The spelling of 121421214213 in words is "one hundred twenty-one billion, four hundred twenty-one million, two hundred fourteen thousand, two hundred thirteen".