21227533347 has 8 divisors (see below), whose sum is σ = 28341680320. Its totient is φ = 14132537640.

The previous prime is 21227533337. The next prime is 21227533351. The reversal of 21227533347 is 74333572212.

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

It is not a de Polignac number, because 21227533347 - 2⁴ = 21227533331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21227533337) 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, 4785229 + ... + 4789662.

It is an arithmetic number, because the mean of its divisors is an integer number (3542710040).

Almost surely, 2^21227533347 is an apocalyptic number.

21227533347 is a deficient number, since it is larger than the sum of its proper divisors (7114146973).

21227533347 is an equidigital number, since it uses as much as digits as its factorization.

21227533347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9575633.

The product of its digits is 211680, while the sum is 39.

The spelling of 21227533347 in words is "twenty-one billion, two hundred twenty-seven million, five hundred thirty-three thousand, three hundred forty-seven".