11020112109 has 6 divisors (see below), whose sum is σ = 15917939726. Its totient is φ = 7346741400.

The previous prime is 11020112101. The next prime is 11020112123. The reversal of 11020112109 is 90121102011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9256364100 + 1763748009 = 96210^2 + 41997^2 .

It is not a de Polignac number, because 11020112109 - 2³ = 11020112101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020112091 and 11020112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020112101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 612228442 + ... + 612228459.

Almost surely, 2^11020112109 is an apocalyptic number.

It is an amenable number.

11020112109 is a deficient number, since it is larger than the sum of its proper divisors (4897827617).

11020112109 is a wasteful number, since it uses less digits than its factorization.

11020112109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224456907 (or 1224456904 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 11020112109 in words is "eleven billion, twenty million, one hundred twelve thousand, one hundred nine".