21333196 has 12 divisors (see below), whose sum is σ = 37403352. Its totient is φ = 10646528.

The previous prime is 21333187. The next prime is 21333197. The reversal of 21333196 is 69133312.

It is not an unprimeable number, because it can be changed into a prime (21333197) 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, 2485 + ... + 6988.

It is an arithmetic number, because the mean of its divisors is an integer number (3116946).

Almost surely, 2^21333196 is an apocalyptic number.

It is an amenable number.

21333196 is a deficient number, since it is larger than the sum of its proper divisors (16070156).

21333196 is a wasteful number, since it uses less digits than its factorization.

21333196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10040 (or 10038 counting only the distinct ones).

The product of its digits is 2916, while the sum is 28.

The square root of 21333196 is about 4618.7872867236. The cubic root of 21333196 is about 277.3439146039.

It can be divided in two parts, 2133 and 3196, that added together give a square (5329 = 73²).

The spelling of 21333196 in words is "twenty-one million, three hundred thirty-three thousand, one hundred ninety-six".