11917212 has 24 divisors (see below), whose sum is σ = 27862800. Its totient is φ = 3964416.

The previous prime is 11917211. The next prime is 11917249. The reversal of 11917212 is 21271911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11917211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10614 + ... + 11682.

It is an arithmetic number, because the mean of its divisors is an integer number (1160950).

Almost surely, 2^11917212 is an apocalyptic number.

11917212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11917212 is an abundant number, since it is smaller than the sum of its proper divisors (15945588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11917212 is a wasteful number, since it uses less digits than its factorization.

11917212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005 (or 2003 counting only the distinct ones).

The product of its digits is 252, while the sum is 24.

The square root of 11917212 is about 3452.1315154553. The cubic root of 11917212 is about 228.4151408547.

The spelling of 11917212 in words is "eleven million, nine hundred seventeen thousand, two hundred twelve".