12901212 has 36 divisors (see below), whose sum is σ = 32768736. Its totient is φ = 4279680.

The previous prime is 12901199. The next prime is 12901223. The reversal of 12901212 is 21210921.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

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 11 ways as a sum of consecutive naturals, for example, 7933 + ... + 9419.

Almost surely, 2^12901212 is an apocalyptic number.

12901212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12901212 is an abundant number, since it is smaller than the sum of its proper divisors (19867524).

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

12901212 is a wasteful number, since it uses less digits than its factorization.

12901212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738 (or 1733 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 12901212 is about 3591.8257196028. The cubic root of 12901212 is about 234.5363545972.

The spelling of 12901212 in words is "twelve million, nine hundred one thousand, two hundred twelve".