2281212 has 18 divisors (see below), whose sum is σ = 5766488. Its totient is φ = 760392.

The previous prime is 2281211. The next prime is 2281219. The reversal of 2281212 is 2121822.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an Ulam number.

2281212 is a modest number, since divided by 1212 gives 228 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281211) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 31648 + ... + 31719.

2^2281212 is an apocalyptic number.

It is an amenable number.

2281212 is an abundant number, since it is smaller than the sum of its proper divisors (3485276).

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

2281212 is a wasteful number, since it uses less digits than its factorization.

2281212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63377 (or 63372 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 2281212 is about 1510.3681670374. The cubic root of 2281212 is about 131.6402047624.

The spelling of 2281212 in words is "two million, two hundred eighty-one thousand, two hundred twelve".