11200021989 has 32 divisors (see below), whose sum is σ = 16532006400. Its totient is φ = 6699843072.

The previous prime is 11200021913. The next prime is 11200021993. The reversal of 11200021989 is 98912000211.

It is not a de Polignac number, because 11200021989 - 2²⁷ = 11065804261 is a prime.

It is a super-2 number, since 2×11200021989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200021999) 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, 1911937 + ... + 1917785.

It is an arithmetic number, because the mean of its divisors is an integer number (516625200).

Almost surely, 2^11200021989 is an apocalyptic number.

It is an amenable number.

11200021989 is a deficient number, since it is larger than the sum of its proper divisors (5331984411).

11200021989 is a wasteful number, since it uses less digits than its factorization.

11200021989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7229.

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 11200021989 in words is "eleven billion, two hundred million, twenty-one thousand, nine hundred eighty-nine".