10221109973 has 2 divisors, whose sum is σ = 10221109974. Its totient is φ = 10221109972.

The previous prime is 10221109853. The next prime is 10221109999. The reversal of 10221109973 is 37990112201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8891924209 + 1329185764 = 94297^2 + 36458^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221109973 - 2¹⁰ = 10221108949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221102973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110554986 + 5110554987.

It is an arithmetic number, because the mean of its divisors is an integer number (5110554987).

Almost surely, 2^10221109973 is an apocalyptic number.

It is an amenable number.

10221109973 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221109973 is an equidigital number, since it uses as much as digits as its factorization.

10221109973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The spelling of 10221109973 in words is "ten billion, two hundred twenty-one million, one hundred nine thousand, nine hundred seventy-three".