32221999973 has 2 divisors, whose sum is σ = 32221999974. Its totient is φ = 32221999972.

The previous prime is 32221999897. The next prime is 32222000017. The reversal of 32221999973 is 37999912223.

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., 27169917889 + 5052082084 = 164833^2 + 71078^2 .

It is a cyclic number.

It is not a de Polignac number, because 32221999973 - 2¹² = 32221995877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32221999373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16110999986 + 16110999987.

It is an arithmetic number, because the mean of its divisors is an integer number (16110999987).

Almost surely, 2^32221999973 is an apocalyptic number.

It is an amenable number.

32221999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

32221999973 is an equidigital number, since it uses as much as digits as its factorization.

32221999973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3306744, while the sum is 56.

The spelling of 32221999973 in words is "thirty-two billion, two hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred seventy-three".