11212119989 has 32 divisors (see below), whose sum is σ = 13190881536. Its totient is φ = 9333043200.

The previous prime is 11212119979. The next prime is 11212120033. The reversal of 11212119989 is 98991121211.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212119989 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212119979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9212309 + ... + 9213525.

It is an arithmetic number, because the mean of its divisors is an integer number (412215048).

Almost surely, 2^11212119989 is an apocalyptic number.

It is an amenable number.

11212119989 is a deficient number, since it is larger than the sum of its proper divisors (1978761547).

11212119989 is a wasteful number, since it uses less digits than its factorization.

11212119989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565.

The product of its digits is 23328, while the sum is 44.

The spelling of 11212119989 in words is "eleven billion, two hundred twelve million, one hundred nineteen thousand, nine hundred eighty-nine".