12211790 has 16 divisors (see below), whose sum is σ = 22247568. Its totient is φ = 4825536.

The previous prime is 12211789. The next prime is 12211817. The reversal of 12211790 is 9711221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6527 + ... + 8186.

It is an arithmetic number, because the mean of its divisors is an integer number (1390473).

Almost surely, 2^12211790 is an apocalyptic number.

12211790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12211790 is a deficient number, since it is larger than the sum of its proper divisors (10035778).

12211790 is a wasteful number, since it uses less digits than its factorization.

12211790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14803.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 12211790 is about 3494.5371653482. The cubic root of 12211790 is about 230.2818850081.

The spelling of 12211790 in words is "twelve million, two hundred eleven thousand, seven hundred ninety".