22002010991 has 2 divisors, whose sum is σ = 22002010992. Its totient is φ = 22002010990.

The previous prime is 22002010981. The next prime is 22002011027. The reversal of 22002010991 is 19901020022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22002010991 - 2¹⁴ = 22001994607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22002010991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22002010981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11001005495 + 11001005496.

It is an arithmetic number, because the mean of its divisors is an integer number (11001005496).

Almost surely, 2^22002010991 is an apocalyptic number.

22002010991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22002010991 is an equidigital number, since it uses as much as digits as its factorization.

22002010991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 22002010991 in words is "twenty-two billion, two million, ten thousand, nine hundred ninety-one".