11199121646 has 16 divisors (see below), whose sum is σ = 17119217808. Its totient is φ = 5492760000.

The previous prime is 11199121643. The next prime is 11199121649. The reversal of 11199121646 is 64612199111.

It is an interprime number because it is at equal distance from previous prime (11199121643) and next prime (11199121649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11199121643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734561 + ... + 749651.

It is an arithmetic number, because the mean of its divisors is an integer number (1069951113).

Almost surely, 2^11199121646 is an apocalyptic number.

11199121646 is a deficient number, since it is larger than the sum of its proper divisors (5920096162).

11199121646 is a wasteful number, since it uses less digits than its factorization.

11199121646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22147.

The product of its digits is 23328, while the sum is 41.

The spelling of 11199121646 in words is "eleven billion, one hundred ninety-nine million, one hundred twenty-one thousand, six hundred forty-six".