102220255 has 8 divisors (see below), whose sum is σ = 123065712. Its totient is φ = 81508608.

The previous prime is 102220231. The next prime is 102220267. The reversal of 102220255 is 552022201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102220255 - 2⁹ = 102219743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31762 + ... + 34831.

It is an arithmetic number, because the mean of its divisors is an integer number (15383214).

Almost surely, 2^102220255 is an apocalyptic number.

102220255 is a deficient number, since it is larger than the sum of its proper divisors (20845457).

102220255 is an equidigital number, since it uses as much as digits as its factorization.

102220255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66905.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 102220255 is about 10110.4033055067. The cubic root of 102220255 is about 467.5689394745.

Adding to 102220255 its reverse (552022201), we get a palindrome (654242456).

The spelling of 102220255 in words is "one hundred two million, two hundred twenty thousand, two hundred fifty-five".