21403222000 has 40 divisors (see below), whose sum is σ = 51752995632. Its totient is φ = 8561288000.

The previous prime is 21403221997. The next prime is 21403222039. The reversal of 21403222000 is 22230412.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5348806 + ... + 5352805.

Almost surely, 2^21403222000 is an apocalyptic number.

21403222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21403222000 is an abundant number, since it is smaller than the sum of its proper divisors (30349773632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21403222000 is a wasteful number, since it uses less digits than its factorization.

21403222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10701634 (or 10701618 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 21403222000 its reverse (22230412), we get a palindrome (21425452412).

The spelling of 21403222000 in words is "twenty-one billion, four hundred three million, two hundred twenty-two thousand".