102221329947487 has 2 divisors, whose sum is σ = 102221329947488. Its totient is φ = 102221329947486.

The previous prime is 102221329947463. The next prime is 102221329947521. The reversal of 102221329947487 is 784749923122201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102221329947487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102221329947437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110664973743 + 51110664973744.

It is an arithmetic number, because the mean of its divisors is an integer number (51110664973744).

Almost surely, 2^{102221329947487} is an apocalyptic number.

102221329947487 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221329947487 is an equidigital number, since it uses as much as digits as its factorization.

102221329947487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24385536, while the sum is 61.

The spelling of 102221329947487 in words is "one hundred two trillion, two hundred twenty-one billion, three hundred twenty-nine million, nine hundred forty-seven thousand, four hundred eighty-seven".