10222201991 has 2 divisors, whose sum is σ = 10222201992. Its totient is φ = 10222201990.

The previous prime is 10222201987. The next prime is 10222202009. The reversal of 10222201991 is 19910222201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10222201991 - 2² = 10222201987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10222201901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111100995 + 5111100996.

It is an arithmetic number, because the mean of its divisors is an integer number (5111100996).

Almost surely, 2^10222201991 is an apocalyptic number.

10222201991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10222201991 is an equidigital number, since it uses as much as digits as its factorization.

10222201991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 10222201991 in words is "ten billion, two hundred twenty-two million, two hundred one thousand, nine hundred ninety-one".