102220221222 has 24 divisors (see below), whose sum is σ = 253116738576. Its totient is φ = 29205777456.

The previous prime is 102220221193. The next prime is 102220221253. The reversal of 102220221222 is 222122022201.

102220221222 is a `hidden beast` number, since 1 + 0 + 2 + 220 + 221 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102220221195 and 102220221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405635673 + ... + 405635924.

It is an arithmetic number, because the mean of its divisors is an integer number (10546530774).

Almost surely, 2^102220221222 is an apocalyptic number.

102220221222 is an abundant number, since it is smaller than the sum of its proper divisors (150896517354).

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

102220221222 is a wasteful number, since it uses less digits than its factorization.

102220221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811271612 (or 811271609 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 102220221222 its reverse (222122022201), we get a palindrome (324342243423).

The spelling of 102220221222 in words is "one hundred two billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-two".