121200013134 has 24 divisors (see below), whose sum is σ = 265009207320. Its totient is φ = 40029361488.

The previous prime is 121200013127. The next prime is 121200013141. The reversal of 121200013134 is 431310002121.

It is an interprime number because it is at equal distance from previous prime (121200013127) and next prime (121200013141).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30884892 + ... + 30888815.

It is an arithmetic number, because the mean of its divisors is an integer number (11042050305).

Almost surely, 2^121200013134 is an apocalyptic number.

121200013134 is an abundant number, since it is smaller than the sum of its proper divisors (143809194186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121200013134 is a wasteful number, since it uses less digits than its factorization.

121200013134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61773824 (or 61773821 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121200013134 its reverse (431310002121), we get a palindrome (552510015255).

The spelling of 121200013134 in words is "one hundred twenty-one billion, two hundred million, thirteen thousand, one hundred thirty-four".