11919100105 has 16 divisors (see below), whose sum is σ = 15618907584. Its totient is φ = 8659702080.

The previous prime is 11919100103. The next prime is 11919100133. The reversal of 11919100105 is 50100191911.

It is a happy number.

It is not a de Polignac number, because 11919100105 - 2¹ = 11919100103 is a prime.

It is a super-2 number, since 2×11919100105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11919100103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53847 + ... + 163516.

It is an arithmetic number, because the mean of its divisors is an integer number (976181724).

Almost surely, 2^11919100105 is an apocalyptic number.

It is an amenable number.

11919100105 is a deficient number, since it is larger than the sum of its proper divisors (3699807479).

11919100105 is a wasteful number, since it uses less digits than its factorization.

11919100105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218376.

The product of its (nonzero) digits is 405, while the sum is 28.

The spelling of 11919100105 in words is "eleven billion, nine hundred nineteen million, one hundred thousand, one hundred five".