22021950 has 48 divisors (see below), whose sum is σ = 57496320. Its totient is φ = 5562720.

The previous prime is 22021943. The next prime is 22021957. The reversal of 22021950 is 5912022.

It is an interprime number because it is at equal distance from previous prime (22021943) and next prime (22021957).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1014 + ... + 6713.

It is an arithmetic number, because the mean of its divisors is an integer number (1197840).

Almost surely, 2^22021950 is an apocalyptic number.

22021950 is an abundant number, since it is smaller than the sum of its proper divisors (35474370).

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

22021950 is a wasteful number, since it uses less digits than its factorization.

22021950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7761 (or 7756 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 22021950 is about 4692.7550543364. The cubic root of 22021950 is about 280.2970911256.

Adding to 22021950 its reverse (5912022), we get a palindrome (27933972).

The spelling of 22021950 in words is "twenty-two million, twenty-one thousand, nine hundred fifty".