102232520155 has 4 divisors (see below), whose sum is σ = 122679024192. Its totient is φ = 81786016120.

The previous prime is 102232520149. The next prime is 102232520171. The reversal of 102232520155 is 551025232201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551025232201 = 17 ⋅32413248953.

It is not a de Polignac number, because 102232520155 - 2¹⁵ = 102232487387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10223252011 + ... + 10223252020.

It is an arithmetic number, because the mean of its divisors is an integer number (30669756048).

Almost surely, 2^102232520155 is an apocalyptic number.

102232520155 is a deficient number, since it is larger than the sum of its proper divisors (20446504037).

102232520155 is an equidigital number, since it uses as much as digits as its factorization.

102232520155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20446504036.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 102232520155 its reverse (551025232201), we get a palindrome (653257752356).

The spelling of 102232520155 in words is "one hundred two billion, two hundred thirty-two million, five hundred twenty thousand, one hundred fifty-five".