11101211991929 has 2 divisors, whose sum is σ = 11101211991930. Its totient is φ = 11101211991928.

The previous prime is 11101211991923. The next prime is 11101211991937. The reversal of 11101211991929 is 92919911210111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8728934343529 + 2372277648400 = 2954477^2 + 1540220^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101211991929 - 2³⁶ = 11032492515193 is a prime.

It is a super-2 number, since 2×11101211991929² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11101211991923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550605995964 + 5550605995965.

It is an arithmetic number, because the mean of its divisors is an integer number (5550605995965).

Almost surely, 2^{11101211991929} is an apocalyptic number.

It is an amenable number.

11101211991929 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101211991929 is an equidigital number, since it uses as much as digits as its factorization.

11101211991929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 47.

The spelling of 11101211991929 in words is "eleven trillion, one hundred one billion, two hundred eleven million, nine hundred ninety-one thousand, nine hundred twenty-nine".