22121106 has 64 divisors (see below), whose sum is σ = 52531200. Its totient is φ = 6080256.

The previous prime is 22121089. The next prime is 22121137. The reversal of 22121106 is 60112122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195706 + ... + 195818.

It is an arithmetic number, because the mean of its divisors is an integer number (820800).

Almost surely, 2^22121106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22121106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26265600).

22121106 is an abundant number, since it is smaller than the sum of its proper divisors (30410094).

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

22121106 is a wasteful number, since it uses less digits than its factorization.

22121106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 22121106 is about 4703.3079848124. The cubic root of 22121106 is about 280.7171497280.

Adding to 22121106 its reverse (60112122), we get a palindrome (82233228).

The spelling of 22121106 in words is "twenty-two million, one hundred twenty-one thousand, one hundred six".