22214021421 has 8 divisors (see below), whose sum is σ = 29628676384. Its totient is φ = 14804357040.

The previous prime is 22214021419. The next prime is 22214021521. The reversal of 22214021421 is 12412041222.

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

It is not a de Polignac number, because 22214021421 - 2¹ = 22214021419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22214021521) 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, 1237246 + ... + 1255071.

It is an arithmetic number, because the mean of its divisors is an integer number (3703584548).

Almost surely, 2^22214021421 is an apocalyptic number.

It is an amenable number.

22214021421 is a deficient number, since it is larger than the sum of its proper divisors (7414654963).

22214021421 is a wasteful number, since it uses less digits than its factorization.

22214021421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495291.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22214021421 its reverse (12412041222), we get a palindrome (34626062643).

The spelling of 22214021421 in words is "twenty-two billion, two hundred fourteen million, twenty-one thousand, four hundred twenty-one".