22021914 has 8 divisors (see below), whose sum is σ = 44043840. Its totient is φ = 7340636.

The previous prime is 22021913. The next prime is 22021943. The reversal of 22021914 is 41912022.

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

22021914 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22021913) 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, 1835154 + ... + 1835165.

It is an arithmetic number, because the mean of its divisors is an integer number (5505480).

Almost surely, 2^22021914 is an apocalyptic number.

22021914 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22021914 is a wasteful number, since it uses less digits than its factorization.

22021914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670324.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 22021914 is about 4692.7512186350. The cubic root of 22021914 is about 280.2969383886.

Adding to 22021914 its reverse (41912022), we get a palindrome (63933936).

The spelling of 22021914 in words is "twenty-two million, twenty-one thousand, nine hundred fourteen".