11012210209 has 32 divisors (see below), whose sum is σ = 15563842560. Its totient is φ = 7503969600.

The previous prime is 11012210201. The next prime is 11012210221. The reversal of 11012210209 is 90201221011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11012210209 - 2³ = 11012210201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (11012210201) 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, 270487 + ... + 308524.

It is an arithmetic number, because the mean of its divisors is an integer number (486370080).

Almost surely, 2^11012210209 is an apocalyptic number.

11012210209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11012210209 is a deficient number, since it is larger than the sum of its proper divisors (4551632351).

11012210209 is a wasteful number, since it uses less digits than its factorization.

11012210209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579061.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 11012210209 in words is "eleven billion, twelve million, two hundred ten thousand, two hundred nine".