102221201947 has 2 divisors, whose sum is σ = 102221201948. Its totient is φ = 102221201946.

The previous prime is 102221201941. The next prime is 102221202019. The reversal of 102221201947 is 749102122201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102221201947 - 2³ = 102221201939 is a prime.

It is not a weakly prime, because it can be changed into another prime (102221201941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110600973 + 51110600974.

It is an arithmetic number, because the mean of its divisors is an integer number (51110600974).

Almost surely, 2^102221201947 is an apocalyptic number.

102221201947 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221201947 is an equidigital number, since it uses as much as digits as its factorization.

102221201947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 102221201947 in words is "one hundred two billion, two hundred twenty-one million, two hundred one thousand, nine hundred forty-seven".