11100121229 has 4 divisors (see below), whose sum is σ = 11482884060. Its totient is φ = 10717358400.

The previous prime is 11100121211. The next prime is 11100121231. The reversal of 11100121229 is 92212100111.

11100121229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92212100111 = 17 ⋅5424241183.

It can be written as a sum of positive squares in 2 ways, for example, as 4472533129 + 6627588100 = 66877^2 + 81410^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100121229 - 2⁸ = 11100120973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11100121229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100121259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191381372 + ... + 191381429.

It is an arithmetic number, because the mean of its divisors is an integer number (2870721015).

Almost surely, 2^11100121229 is an apocalyptic number.

It is an amenable number.

11100121229 is a deficient number, since it is larger than the sum of its proper divisors (382762831).

11100121229 is an equidigital number, since it uses as much as digits as its factorization.

11100121229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382762830.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 11100121229 in words is "eleven billion, one hundred million, one hundred twenty-one thousand, two hundred twenty-nine".