22222032140 has 72 divisors (see below), whose sum is σ = 59220301392. Its totient is φ = 6926344320.

The previous prime is 22222032083. The next prime is 22222032143. The reversal of 22222032140 is 4123022222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (22222032143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1019927 + ... + 1041486.

It is an arithmetic number, because the mean of its divisors is an integer number (822504186).

Almost surely, 2^22222032140 is an apocalyptic number.

22222032140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222032140 is an abundant number, since it is smaller than the sum of its proper divisors (36998269252).

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

22222032140 is a wasteful number, since it uses less digits than its factorization.

22222032140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061447 (or 2061438 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22222032140 its reverse (4123022222), we get a palindrome (26345054362).

The spelling of 22222032140 in words is "twenty-two billion, two hundred twenty-two million, thirty-two thousand, one hundred forty".