973198476221 has 4 divisors (see below), whose sum is σ = 1015511453472. Its totient is φ = 930885498972.

The previous prime is 973198476167. The next prime is 973198476251. The reversal of 973198476221 is 122674891379.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 973198476221 - 2¹⁸ = 973198214077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973198476251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21156488591 + ... + 21156488636.

It is an arithmetic number, because the mean of its divisors is an integer number (253877863368).

Almost surely, 2^973198476221 is an apocalyptic number.

It is an amenable number.

973198476221 is a deficient number, since it is larger than the sum of its proper divisors (42312977251).

973198476221 is a wasteful number, since it uses less digits than its factorization.

973198476221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42312977250.

The product of its digits is 9144576, while the sum is 59.

The spelling of 973198476221 in words is "nine hundred seventy-three billion, one hundred ninety-eight million, four hundred seventy-six thousand, two hundred twenty-one".