21227064403 has 8 divisors (see below), whose sum is σ = 21914919936. Its totient is φ = 20539403400.

The previous prime is 21227064401. The next prime is 21227064409. The reversal of 21227064403 is 30446072212.

It is a happy number.

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

It is not a de Polignac number, because 21227064403 - 2¹ = 21227064401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21227064401) 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, 192138 + ... + 281728.

It is an arithmetic number, because the mean of its divisors is an integer number (2739364992).

Almost surely, 2^21227064403 is an apocalyptic number.

21227064403 is a deficient number, since it is larger than the sum of its proper divisors (687855533).

21227064403 is an equidigital number, since it uses as much as digits as its factorization.

21227064403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97265.

The product of its (nonzero) digits is 16128, while the sum is 31.

The spelling of 21227064403 in words is "twenty-one billion, two hundred twenty-seven million, sixty-four thousand, four hundred three".