12212390 has 8 divisors (see below), whose sum is σ = 21982320. Its totient is φ = 4884952.

The previous prime is 12212377. The next prime is 12212399. The reversal of 12212390 is 9321221.

12212390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212399) 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, 610610 + ... + 610629.

It is an arithmetic number, because the mean of its divisors is an integer number (2747790).

Almost surely, 2^12212390 is an apocalyptic number.

12212390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212390 is a deficient number, since it is larger than the sum of its proper divisors (9769930).

12212390 is a wasteful number, since it uses less digits than its factorization.

12212390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221246.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12212390 is about 3494.6230125723. The cubic root of 12212390 is about 230.2856564145.

The spelling of 12212390 in words is "twelve million, two hundred twelve thousand, three hundred ninety".