11023212091 has 2 divisors, whose sum is σ = 11023212092. Its totient is φ = 11023212090.

The previous prime is 11023212073. The next prime is 11023212113. The reversal of 11023212091 is 19021232011.

It is an a-pointer prime, because the next prime (11023212113) can be obtained adding 11023212091 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11023212091 - 2⁷ = 11023211963 is a prime.

It is a super-2 number, since 2×11023212091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11023219091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511606045 + 5511606046.

It is an arithmetic number, because the mean of its divisors is an integer number (5511606046).

Almost surely, 2^11023212091 is an apocalyptic number.

11023212091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11023212091 is an equidigital number, since it uses as much as digits as its factorization.

11023212091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 11023212091 in words is "eleven billion, twenty-three million, two hundred twelve thousand, ninety-one".