102201993997 has 2 divisors, whose sum is σ = 102201993998. Its totient is φ = 102201993996.

The previous prime is 102201993953. The next prime is 102201994019. The reversal of 102201993997 is 799399102201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100302690436 + 1899303561 = 316706^2 + 43581^2 .

It is a cyclic number.

It is not a de Polignac number, because 102201993997 - 2²³ = 102193605389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102201993917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100996998 + 51100996999.

It is an arithmetic number, because the mean of its divisors is an integer number (51100996999).

Almost surely, 2^102201993997 is an apocalyptic number.

It is an amenable number.

102201993997 is a deficient number, since it is larger than the sum of its proper divisors (1).

102201993997 is an equidigital number, since it uses as much as digits as its factorization.

102201993997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 551124, while the sum is 52.

The spelling of 102201993997 in words is "one hundred two billion, two hundred one million, nine hundred ninety-three thousand, nine hundred ninety-seven".