102122455 has 4 divisors (see below), whose sum is σ = 122546952. Its totient is φ = 81697960.

The previous prime is 102122443. The next prime is 102122459. The reversal of 102122455 is 554221201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554221201 = 1511 ⋅366791.

It is not a de Polignac number, because 102122455 - 2²³ = 93733847 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 (102122459) 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, 10212241 + ... + 10212250.

It is an arithmetic number, because the mean of its divisors is an integer number (30636738).

Almost surely, 2^102122455 is an apocalyptic number.

102122455 is a deficient number, since it is larger than the sum of its proper divisors (20424497).

102122455 is an equidigital number, since it uses as much as digits as its factorization.

102122455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20424496.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 102122455 is about 10105.5655457772. The cubic root of 102122455 is about 467.4197751898.

Adding to 102122455 its reverse (554221201), we get a palindrome (656343656).

The spelling of 102122455 in words is "one hundred two million, one hundred twenty-two thousand, four hundred fifty-five".