102225012154 has 4 divisors (see below), whose sum is σ = 153337518234. Its totient is φ = 51112506076.

The previous prime is 102225012137. The next prime is 102225012191. The reversal of 102225012154 is 451210522201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451210522201 = 63127 ⋅7147663.

It can be written as a sum of positive squares in only one way, i.e., 58625484129 + 43599528025 = 242127^2 + 208805^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25556253037 + ... + 25556253040.

Almost surely, 2^102225012154 is an apocalyptic number.

102225012154 is a deficient number, since it is larger than the sum of its proper divisors (51112506080).

102225012154 is an equidigital number, since it uses as much as digits as its factorization.

102225012154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51112506079.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 102225012154 its reverse (451210522201), we get a palindrome (553435534355).

The spelling of 102225012154 in words is "one hundred two billion, two hundred twenty-five million, twelve thousand, one hundred fifty-four".