22821116 has 6 divisors (see below), whose sum is σ = 39936960. Its totient is φ = 11410556.

The previous prime is 22821107. The next prime is 22821131. The reversal of 22821116 is 61112822.

It is a junction number, because it is equal to n+sod(n) for n = 22821091 and 22821100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2852636 + ... + 2852643.

It is an arithmetic number, because the mean of its divisors is an integer number (6656160).

Almost surely, 2^22821116 is an apocalyptic number.

It is an amenable number.

22821116 is a deficient number, since it is larger than the sum of its proper divisors (17115844).

22821116 is a wasteful number, since it uses less digits than its factorization.

22821116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705283 (or 5705281 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 22821116 is about 4777.1451725900. The cubic root of 22821116 is about 283.6474995752.

Adding to 22821116 its reverse (61112822), we get a palindrome (83933938).

The spelling of 22821116 in words is "twenty-two million, eight hundred twenty-one thousand, one hundred sixteen".