11200021019 has 4 divisors (see below), whose sum is σ = 12218204760. Its totient is φ = 10181837280.

The previous prime is 11200020977. The next prime is 11200021033. The reversal of 11200021019 is 91012000211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11200021019 - 2¹² = 11200016923 is a prime.

It is a super-2 number, since 2×11200021019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200020988 and 11200021006.

It is not an unprimeable number, because it can be changed into a prime (11200021069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509091854 + ... + 509091875.

It is an arithmetic number, because the mean of its divisors is an integer number (3054551190).

Almost surely, 2^11200021019 is an apocalyptic number.

11200021019 is a deficient number, since it is larger than the sum of its proper divisors (1018183741).

11200021019 is a wasteful number, since it uses less digits than its factorization.

11200021019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018183740.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 11200021019 in words is "eleven billion, two hundred million, twenty-one thousand, nineteen".