100135541254121 has 4 divisors (see below), whose sum is σ = 100135651428432. Its totient is φ = 100135431079812.

The previous prime is 100135541254019. The next prime is 100135541254153. The reversal of 100135541254121 is 121452145531001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100135541254121 - 2²⁶ = 100135474145257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100135541254421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53712395 + ... + 55545408.

It is an arithmetic number, because the mean of its divisors is an integer number (25033912857108).

Almost surely, 2^{100135541254121} is an apocalyptic number.

It is an amenable number.

100135541254121 is a deficient number, since it is larger than the sum of its proper divisors (110174311).

100135541254121 is an equidigital number, since it uses as much as digits as its factorization.

100135541254121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110174310.

The product of its (nonzero) digits is 24000, while the sum is 35.

Adding to 100135541254121 its reverse (121452145531001), we get a palindrome (221587686785122).

The spelling of 100135541254121 in words is "one hundred trillion, one hundred thirty-five billion, five hundred forty-one million, two hundred fifty-four thousand, one hundred twenty-one".