10221120979 has 2 divisors, whose sum is σ = 10221120980. Its totient is φ = 10221120978.

The previous prime is 10221120971. The next prime is 10221121007. The reversal of 10221120979 is 97902112201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10221120979 - 2³ = 10221120971 is a prime.

It is not a weakly prime, because it can be changed into another prime (10221120971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110560489 + 5110560490.

It is an arithmetic number, because the mean of its divisors is an integer number (5110560490).

Almost surely, 2^10221120979 is an apocalyptic number.

10221120979 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221120979 is an equidigital number, since it uses as much as digits as its factorization.

10221120979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 10221120979 in words is "ten billion, two hundred twenty-one million, one hundred twenty thousand, nine hundred seventy-nine".