102221211122 has 4 divisors (see below), whose sum is σ = 153331816686. Its totient is φ = 51110605560.

The previous prime is 102221211091. The next prime is 102221211137. The reversal of 102221211122 is 221112122201.

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

It can be written as a sum of positive squares in only one way, i.e., 99356713681 + 2864497441 = 315209^2 + 53521^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102221211122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555302779 + ... + 25555302782.

Almost surely, 2^102221211122 is an apocalyptic number.

102221211122 is a deficient number, since it is larger than the sum of its proper divisors (51110605564).

102221211122 is an equidigital number, since it uses as much as digits as its factorization.

102221211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51110605563.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102221211122 its reverse (221112122201), we get a palindrome (323333333323).

The spelling of 102221211122 in words is "one hundred two billion, two hundred twenty-one million, two hundred eleven thousand, one hundred twenty-two".