22121682 has 32 divisors (see below), whose sum is σ = 48432384. Its totient is φ = 6680400.

The previous prime is 22121663. The next prime is 22121689. The reversal of 22121682 is 28612122.

It is not an unprimeable number, because it can be changed into a prime (22121689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37393 + ... + 37979.

It is an arithmetic number, because the mean of its divisors is an integer number (1513512).

Almost surely, 2^22121682 is an apocalyptic number.

22121682 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22121682 is an abundant number, since it is smaller than the sum of its proper divisors (26310702).

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

22121682 is a wasteful number, since it uses less digits than its factorization.

22121682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174.

The product of its digits is 768, while the sum is 24.

The square root of 22121682 is about 4703.3692179118. The cubic root of 22121682 is about 280.7195861896.

The spelling of 22121682 in words is "twenty-two million, one hundred twenty-one thousand, six hundred eighty-two".