20221244 has 24 divisors (see below), whose sum is σ = 37606800. Its totient is φ = 9486720.

The previous prime is 20221231. The next prime is 20221259. The reversal of 20221244 is 44212202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7064 + ... + 9504.

It is an arithmetic number, because the mean of its divisors is an integer number (1566950).

Almost surely, 2^20221244 is an apocalyptic number.

It is an amenable number.

20221244 is a deficient number, since it is larger than the sum of its proper divisors (17385556).

20221244 is a wasteful number, since it uses less digits than its factorization.

20221244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2571 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 20221244 is about 4496.8037537789. The cubic root of 20221244 is about 272.4390077562.

Adding to 20221244 its reverse (44212202), we get a palindrome (64433446).

The spelling of 20221244 in words is "twenty million, two hundred twenty-one thousand, two hundred forty-four".