11209012 has 12 divisors (see below), whose sum is σ = 20648320. Its totient is φ = 5309496.

The previous prime is 11209007. The next prime is 11209013. The reversal of 11209012 is 21090211.

It is a super-2 number, since 2×11209012² = 251283900032288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11209013) 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, 73668 + ... + 73819.

Almost surely, 2^11209012 is an apocalyptic number.

It is an amenable number.

11209012 is a deficient number, since it is larger than the sum of its proper divisors (9439308).

11209012 is a wasteful number, since it uses less digits than its factorization.

11209012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147510 (or 147508 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 11209012 is about 3347.9862604258. The cubic root of 11209012 is about 223.7977819991.

Adding to 11209012 its reverse (21090211), we get a palindrome (32299223).

The spelling of 11209012 in words is "eleven million, two hundred nine thousand, twelve".