22021014421 has 8 divisors (see below), whose sum is σ = 26491446080. Its totient is φ = 17881725888.

The previous prime is 22021014401. The next prime is 22021014469. The reversal of 22021014421 is 12441012022.

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

It is a cyclic number.

It is not a de Polignac number, because 22021014421 - 2¹³ = 22021006229 is a prime.

It is a super-2 number, since 2×22021014421² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021014401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82785636 + ... + 82785901.

It is an arithmetic number, because the mean of its divisors is an integer number (3311430760).

Almost surely, 2^22021014421 is an apocalyptic number.

It is an amenable number.

22021014421 is a deficient number, since it is larger than the sum of its proper divisors (4470431659).

22021014421 is a wasteful number, since it uses less digits than its factorization.

22021014421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165571563.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22021014421 its reverse (12441012022), we get a palindrome (34462026443).

The spelling of 22021014421 in words is "twenty-two billion, twenty-one million, fourteen thousand, four hundred twenty-one".