12212984 has 24 divisors (see below), whose sum is σ = 26226840. Its totient is φ = 5222928.

The previous prime is 12212983. The next prime is 12213001. The reversal of 12212984 is 48921221.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25919 + ... + 26385.

It is an arithmetic number, because the mean of its divisors is an integer number (1092785).

Almost surely, 2^12212984 is an apocalyptic number.

12212984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12212984 is an abundant number, since it is smaller than the sum of its proper divisors (14013856).

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

12212984 is an frugal number, since it uses more digits than its factorization.

12212984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 476 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 12212984 is about 3494.7079992469. The cubic root of 12212984 is about 230.2893899851.

The spelling of 12212984 in words is "twelve million, two hundred twelve thousand, nine hundred eighty-four".