102221221222 has 4 divisors (see below), whose sum is σ = 153331831836. Its totient is φ = 51110610610.

The previous prime is 102221221181. The next prime is 102221221241. The reversal of 102221221222 is 222122122201.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 102221221222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555305304 + ... + 25555305307.

It is an arithmetic number, because the mean of its divisors is an integer number (38332957959).

Almost surely, 2^102221221222 is an apocalyptic number.

102221221222 is a deficient number, since it is larger than the sum of its proper divisors (51110610614).

102221221222 is an equidigital number, since it uses as much as digits as its factorization.

102221221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51110610613.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 102221221222 its reverse (222122122201), we get a palindrome (324343343423).

The spelling of 102221221222 in words is "one hundred two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".