21435621422 has 8 divisors (see below), whose sum is σ = 32176256400. Its totient is φ = 10710202624.

The previous prime is 21435621373. The next prime is 21435621433. The reversal of 21435621422 is 22412653412.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3800522 + ... + 3806157.

It is an arithmetic number, because the mean of its divisors is an integer number (4022032050).

Almost surely, 2^21435621422 is an apocalyptic number.

21435621422 is a deficient number, since it is larger than the sum of its proper divisors (10740634978).

21435621422 is a wasteful number, since it uses less digits than its factorization.

21435621422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7608090.

The product of its digits is 23040, while the sum is 32.

The spelling of 21435621422 in words is "twenty-one billion, four hundred thirty-five million, six hundred twenty-one thousand, four hundred twenty-two".