91101929123 has 2 divisors, whose sum is σ = 91101929124. Its totient is φ = 91101929122.

The previous prime is 91101929089. The next prime is 91101929129. The reversal of 91101929123 is 32192910119.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91101929123 - 2¹⁴ = 91101912739 is a prime.

It is a super-2 number, since 2×91101929123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91101929129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45550964561 + 45550964562.

It is an arithmetic number, because the mean of its divisors is an integer number (45550964562).

Almost surely, 2^91101929123 is an apocalyptic number.

91101929123 is a deficient number, since it is larger than the sum of its proper divisors (1).

91101929123 is an equidigital number, since it uses as much as digits as its factorization.

91101929123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 38.

The spelling of 91101929123 in words is "ninety-one billion, one hundred one million, nine hundred twenty-nine thousand, one hundred twenty-three".