10221220973 has 2 divisors, whose sum is σ = 10221220974. Its totient is φ = 10221220972.

The previous prime is 10221220969. The next prime is 10221221027. The reversal of 10221220973 is 37902212201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8972446729 + 1248774244 = 94723^2 + 35338^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221220973 - 2² = 10221220969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221220073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110610486 + 5110610487.

It is an arithmetic number, because the mean of its divisors is an integer number (5110610487).

Almost surely, 2^10221220973 is an apocalyptic number.

It is an amenable number.

10221220973 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221220973 is an equidigital number, since it uses as much as digits as its factorization.

10221220973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 10221220973 in words is "ten billion, two hundred twenty-one million, two hundred twenty thousand, nine hundred seventy-three".