22012122 has 16 divisors (see below), whose sum is σ = 48026592. Its totient is φ = 6670320.

The previous prime is 22012117. The next prime is 22012129. The reversal of 22012122 is 22121022.

It is a junction number, because it is equal to n+sod(n) for n = 22012098 and 22012107.

It is not an unprimeable number, because it can be changed into a prime (22012129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166693 + ... + 166824.

It is an arithmetic number, because the mean of its divisors is an integer number (3001662).

Almost surely, 2^22012122 is an apocalyptic number.

22012122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22012122 is an abundant number, since it is smaller than the sum of its proper divisors (26014470).

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

22012122 is a wasteful number, since it uses less digits than its factorization.

22012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333533.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22012122 is about 4691.7077914124. The cubic root of 22012122 is about 280.2553877386.

Adding to 22012122 its reverse (22121022), we get a palindrome (44133144).

Subtracting 22012122 from its reverse (22121022), we obtain a square (108900 = 330²).

The spelling of 22012122 in words is "twenty-two million, twelve thousand, one hundred twenty-two".