10001222091 has 32 divisors (see below), whose sum is σ = 16945420800. Its totient is φ = 5710888800.

The previous prime is 10001222081. The next prime is 10001222149. The reversal of 10001222091 is 19022210001.

It is not a de Polignac number, because 10001222091 - 2¹⁷ = 10001091019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10001222041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256005 + ... + 292473.

It is an arithmetic number, because the mean of its divisors is an integer number (529544400).

Almost surely, 2^10001222091 is an apocalyptic number.

10001222091 is a deficient number, since it is larger than the sum of its proper divisors (6944198709).

10001222091 is a wasteful number, since it uses less digits than its factorization.

10001222091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37936 (or 37930 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 10001222091 its reverse (19022210001), we get a palindrome (29023432092).

The spelling of 10001222091 in words is "ten billion, one million, two hundred twenty-two thousand, ninety-one".