154113312122121 has 16 divisors (see below), whose sum is σ = 225540061920000. Its totient is φ = 92828988893520.

The previous prime is 154113312122051. The next prime is 154113312122123. The reversal of 154113312122121 is 121221213311451.

It is a happy number.

It is not a de Polignac number, because 154113312122121 - 2⁹ = 154113312121609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154113312122123) 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, 14325455871 + ... + 14325466628.

It is an arithmetic number, because the mean of its divisors is an integer number (14096253870000).

Almost surely, 2^{154113312122121} is an apocalyptic number.

154113312122121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

154113312122121 is a deficient number, since it is larger than the sum of its proper divisors (71426749797879).

154113312122121 is a wasteful number, since it uses less digits than its factorization.

154113312122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28650922676.

The product of its digits is 2880, while the sum is 30.

Adding to 154113312122121 its reverse (121221213311451), we get a palindrome (275334525433572).

The spelling of 154113312122121 in words is "one hundred fifty-four trillion, one hundred thirteen billion, three hundred twelve million, one hundred twenty-two thousand, one hundred twenty-one".