12154100101 has 32 divisors (see below), whose sum is σ = 15046416000. Its totient is φ = 9652193280.

The previous prime is 12154100089. The next prime is 12154100111. The reversal of 12154100101 is 10100145121.

It is a cyclic number.

It is not a de Polignac number, because 12154100101 - 2¹⁹ = 12153575813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154100111) 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, 3522225 + ... + 3525673.

It is an arithmetic number, because the mean of its divisors is an integer number (470200500).

Almost surely, 2^12154100101 is an apocalyptic number.

12154100101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12154100101 is a deficient number, since it is larger than the sum of its proper divisors (2892315899).

12154100101 is a wasteful number, since it uses less digits than its factorization.

12154100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 12154100101 its reverse (10100145121), we get a palindrome (22254245222).

The spelling of 12154100101 in words is "twelve billion, one hundred fifty-four million, one hundred thousand, one hundred one".