22821102 has 24 divisors (see below), whose sum is σ = 51278136. Its totient is φ = 7606872.

The previous prime is 22821091. The next prime is 22821107. The reversal of 22821102 is 20112822.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22821107) 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, 22993 + ... + 23964.

It is an arithmetic number, because the mean of its divisors is an integer number (2136589).

Almost surely, 2^22821102 is an apocalyptic number.

22821102 is an abundant number, since it is smaller than the sum of its proper divisors (28457034).

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

22821102 is an equidigital number, since it uses as much as digits as its factorization.

22821102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46974 (or 46962 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 22821102 is about 4777.1437072795. The cubic root of 22821102 is about 283.6474415724.

Adding to 22821102 its reverse (20112822), we get a palindrome (42933924).

The spelling of 22821102 in words is "twenty-two million, eight hundred twenty-one thousand, one hundred two".