22122140 has 24 divisors (see below), whose sum is σ = 46576320. Its totient is φ = 8826048.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122140 is 4122122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8066 + ... + 10454.

It is an arithmetic number, because the mean of its divisors is an integer number (1940680).

Almost surely, 2^22122140 is an apocalyptic number.

22122140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122140 is an abundant number, since it is smaller than the sum of its proper divisors (24454180).

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

22122140 is a wasteful number, since it uses less digits than its factorization.

22122140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861 (or 2859 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 22122140 is about 4703.4179061614. The cubic root of 22122140 is about 280.7215234848.

Adding to 22122140 its reverse (4122122), we get a palindrome (26244262).

The spelling of 22122140 in words is "twenty-two million, one hundred twenty-two thousand, one hundred forty".