21333094 has 4 divisors (see below), whose sum is σ = 31999644. Its totient is φ = 10666546.

The previous prime is 21333089. The next prime is 21333097. The reversal of 21333094 is 49033312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21333094² = 910201799225672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333272 + ... + 5333275.

It is an arithmetic number, because the mean of its divisors is an integer number (7999911).

Almost surely, 2^21333094 is an apocalyptic number.

21333094 is a deficient number, since it is larger than the sum of its proper divisors (10666550).

21333094 is a wasteful number, since it uses less digits than its factorization.

21333094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666549.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 21333094 is about 4618.7762448510. The cubic root of 21333094 is about 277.3434725835.

The spelling of 21333094 in words is "twenty-one million, three hundred thirty-three thousand, ninety-four".