102102151 has 4 divisors (see below), whose sum is σ = 102330000. Its totient is φ = 101874304.

The previous prime is 102102139. The next prime is 102102157. The reversal of 102102151 is 151201201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151201201 = 43 ⋅3516307.

It is a cyclic number.

It is not a de Polignac number, because 102102151 - 2⁹ = 102101639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102157) 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, 113251 + ... + 114148.

It is an arithmetic number, because the mean of its divisors is an integer number (25582500).

Almost surely, 2^102102151 is an apocalyptic number.

102102151 is a deficient number, since it is larger than the sum of its proper divisors (227849).

102102151 is an equidigital number, since it uses as much as digits as its factorization.

102102151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227848.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 102102151 is about 10104.5609009001. The cubic root of 102102151 is about 467.3887956495.

Adding to 102102151 its reverse (151201201), we get a palindrome (253303352).

The spelling of 102102151 in words is "one hundred two million, one hundred two thousand, one hundred fifty-one".