102012220993 has 2 divisors, whose sum is σ = 102012220994. Its totient is φ = 102012220992.

The previous prime is 102012220963. The next prime is 102012221009. The reversal of 102012220993 is 399022210201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58734491904 + 43277729089 = 242352^2 + 208033^2 .

It is a cyclic number.

It is not a de Polignac number, because 102012220993 - 2¹³ = 102012212801 is a prime.

It is not a weakly prime, because it can be changed into another prime (102012220963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51006110496 + 51006110497.

It is an arithmetic number, because the mean of its divisors is an integer number (51006110497).

Almost surely, 2^102012220993 is an apocalyptic number.

It is an amenable number.

102012220993 is a deficient number, since it is larger than the sum of its proper divisors (1).

102012220993 is an equidigital number, since it uses as much as digits as its factorization.

102012220993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 102012220993 in words is "one hundred two billion, twelve million, two hundred twenty thousand, nine hundred ninety-three".