21330069 has 8 divisors (see below), whose sum is σ = 28480512. Its totient is φ = 14199840.

The previous prime is 21330059. The next prime is 21330073. The reversal of 21330069 is 96003312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21330069 - 2⁹ = 21329557 is a prime.

It is a super-2 number, since 2×21330069² = 909943687089522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389 + ... + 6954.

It is an arithmetic number, because the mean of its divisors is an integer number (3560064).

Almost surely, 2^21330069 is an apocalyptic number.

It is an amenable number.

21330069 is a deficient number, since it is larger than the sum of its proper divisors (7150443).

21330069 is an equidigital number, since it uses as much as digits as its factorization.

21330069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10107.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 21330069 is about 4618.4487655489. The cubic root of 21330069 is about 277.3303630042.

The spelling of 21330069 in words is "twenty-one million, three hundred thirty thousand, sixty-nine".