21321213022 has 8 divisors (see below), whose sum is σ = 32012604000. Its totient is φ = 10650345024.

The previous prime is 21321212987. The next prime is 21321213029. The reversal of 21321213022 is 22031212312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321213029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5128147 + ... + 5132302.

It is an arithmetic number, because the mean of its divisors is an integer number (4001575500).

Almost surely, 2^21321213022 is an apocalyptic number.

21321213022 is a deficient number, since it is larger than the sum of its proper divisors (10691390978).

21321213022 is a wasteful number, since it uses less digits than its factorization.

21321213022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10261490.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21321213022 its reverse (22031212312), we get a palindrome (43352425334).

The spelling of 21321213022 in words is "twenty-one billion, three hundred twenty-one million, two hundred thirteen thousand, twenty-two".