21114332 has 12 divisors (see below), whose sum is σ = 37015776. Its totient is φ = 10538400.

The previous prime is 21114319. The next prime is 21114337. The reversal of 21114332 is 23341112.

It is a self number, because there is not a number n which added to its sum of digits gives 21114332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114337) 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, 1988 + ... + 6795.

It is an arithmetic number, because the mean of its divisors is an integer number (3084648).

Almost surely, 2^21114332 is an apocalyptic number.

It is an amenable number.

21114332 is a deficient number, since it is larger than the sum of its proper divisors (15901444).

21114332 is a wasteful number, since it uses less digits than its factorization.

21114332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9388 (or 9386 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 21114332 is about 4595.0334057545. The cubic root of 21114332 is about 276.3921995393.

Adding to 21114332 its reverse (23341112), we get a palindrome (44455444).

It can be divided in two parts, 211143 and 32, that multiplied together give a palindrome (6756576).

The spelling of 21114332 in words is "twenty-one million, one hundred fourteen thousand, three hundred thirty-two".