974283966221 has 2 divisors, whose sum is σ = 974283966222. Its totient is φ = 974283966220.

The previous prime is 974283966191. The next prime is 974283966269. The reversal of 974283966221 is 122669382479.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972738375625 + 1545590596 = 986275^2 + 39314^2 .

It is a cyclic number.

It is not a de Polignac number, because 974283966221 - 2¹⁰ = 974283965197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974283966521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487141983110 + 487141983111.

It is an arithmetic number, because the mean of its divisors is an integer number (487141983111).

Almost surely, 2^974283966221 is an apocalyptic number.

It is an amenable number.

974283966221 is a deficient number, since it is larger than the sum of its proper divisors (1).

974283966221 is an equidigital number, since it uses as much as digits as its factorization.

974283966221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 59.

The spelling of 974283966221 in words is "nine hundred seventy-four billion, two hundred eighty-three million, nine hundred sixty-six thousand, two hundred twenty-one".