12222690 has 32 divisors (see below), whose sum is σ = 29500416. Its totient is φ = 3240960.

The previous prime is 12222673. The next prime is 12222697. The reversal of 12222690 is 9622221.

It is a super-2 number, since 2×12222690² = 298788301672200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12222690.

It is not an unprimeable number, because it can be changed into a prime (12222697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4735 + ... + 6845.

It is an arithmetic number, because the mean of its divisors is an integer number (921888).

Almost surely, 2^12222690 is an apocalyptic number.

12222690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12222690 is an abundant number, since it is smaller than the sum of its proper divisors (17277726).

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

12222690 is a wasteful number, since it uses less digits than its factorization.

12222690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12222690 is about 3496.0963945521. The cubic root of 12222690 is about 230.3503796378.

The spelling of 12222690 in words is "twelve million, two hundred twenty-two thousand, six hundred ninety".