22050621 has 12 divisors (see below), whose sum is σ = 33527520. Its totient is φ = 13926600.

The previous prime is 22050617. The next prime is 22050647. The reversal of 22050621 is 12605022.

It is not a de Polignac number, because 22050621 - 2² = 22050617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22050594 and 22050603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22050671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64305 + ... + 64646.

It is an arithmetic number, because the mean of its divisors is an integer number (2793960).

Almost surely, 2^22050621 is an apocalyptic number.

It is an amenable number.

22050621 is a deficient number, since it is larger than the sum of its proper divisors (11476899).

22050621 is a wasteful number, since it uses less digits than its factorization.

22050621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128976 (or 128973 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22050621 is about 4695.8088760085. The cubic root of 22050621 is about 280.4186806127.

Adding to 22050621 its reverse (12605022), we get a palindrome (34655643).

The spelling of 22050621 in words is "twenty-two million, fifty thousand, six hundred twenty-one".