154115112114021 has 16 divisors (see below), whose sum is σ = 207973190303424. Its totient is φ = 101500347540864.

The previous prime is 154115112114013. The next prime is 154115112114043. The reversal of 154115112114021 is 120411211511451.

It is not a de Polignac number, because 154115112114021 - 2³ = 154115112114013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154115112114021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154115112114421) 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, 10933066 + ... + 20682411.

It is an arithmetic number, because the mean of its divisors is an integer number (12998324393964).

Almost surely, 2^{154115112114021} is an apocalyptic number.

It is an amenable number.

154115112114021 is a deficient number, since it is larger than the sum of its proper divisors (53858078189403).

154115112114021 is a wasteful number, since it uses less digits than its factorization.

154115112114021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31635140.

The product of its (nonzero) digits is 1600, while the sum is 30.

Adding to 154115112114021 its reverse (120411211511451), we get a palindrome (274526323625472).

The spelling of 154115112114021 in words is "one hundred fifty-four trillion, one hundred fifteen billion, one hundred twelve million, one hundred fourteen thousand, twenty-one".