120343134111121 has 16 divisors (see below), whose sum is σ = 122483856337920. Its totient is φ = 118212838595280.

The previous prime is 120343134111103. The next prime is 120343134111127. The reversal of 120343134111121 is 121111431343021.

It is a cyclic number.

It is not a de Polignac number, because 120343134111121 - 2²³ = 120343125722513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120343134111121.

It is not an unprimeable number, because it can be changed into a prime (120343134111127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53218206 + ... + 55433416.

It is an arithmetic number, because the mean of its divisors is an integer number (7655241021120).

Almost surely, 2^{120343134111121} is an apocalyptic number.

It is an amenable number.

120343134111121 is a deficient number, since it is larger than the sum of its proper divisors (2140722226799).

120343134111121 is a wasteful number, since it uses less digits than its factorization.

120343134111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217564.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 120343134111121 its reverse (121111431343021), we get a palindrome (241454565454142).

The spelling of 120343134111121 in words is "one hundred twenty trillion, three hundred forty-three billion, one hundred thirty-four million, one hundred eleven thousand, one hundred twenty-one".