102221212123 has 2 divisors, whose sum is σ = 102221212124. Its totient is φ = 102221212122.

The previous prime is 102221212097. The next prime is 102221212133. The reversal of 102221212123 is 321212122201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102221212123 - 2⁵ = 102221212091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102221212123.

It is not a weakly prime, because it can be changed into another prime (102221212133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110606061 + 51110606062.

It is an arithmetic number, because the mean of its divisors is an integer number (51110606062).

Almost surely, 2^102221212123 is an apocalyptic number.

102221212123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221212123 is an equidigital number, since it uses as much as digits as its factorization.

102221212123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 102221212123 its reverse (321212122201), we get a palindrome (423433334324).

The spelling of 102221212123 in words is "one hundred two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twenty-three".