102222021258 has 96 divisors (see below), whose sum is σ = 282116615040. Its totient is φ = 26041512960.

The previous prime is 102222021257. The next prime is 102222021269. The reversal of 102222021258 is 852120222201.

It is not an unprimeable number, because it can be changed into a prime (102222021257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1215163 + ... + 1296558.

It is an arithmetic number, because the mean of its divisors is an integer number (2938714740).

Almost surely, 2^102222021258 is an apocalyptic number.

102222021258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

102222021258 is an abundant number, since it is smaller than the sum of its proper divisors (179894593782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102222021258 is a wasteful number, since it uses less digits than its factorization.

102222021258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511772 (or 2511769 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 102222021258 its reverse (852120222201), we get a palindrome (954342243459).

The spelling of 102222021258 in words is "one hundred two billion, two hundred twenty-two million, twenty-one thousand, two hundred fifty-eight".