20222142440 has 64 divisors (see below), whose sum is σ = 46036598400. Its totient is φ = 7993757952.

The previous prime is 20222142439. The next prime is 20222142449. The reversal of 20222142440 is 4424122202.

It is not an unprimeable number, because it can be changed into a prime (20222142449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2092259 + ... + 2101901.

It is an arithmetic number, because the mean of its divisors is an integer number (719321850).

Almost surely, 2^20222142440 is an apocalyptic number.

20222142440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20222142440 is an abundant number, since it is smaller than the sum of its proper divisors (25814455960).

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

20222142440 is a wasteful number, since it uses less digits than its factorization.

20222142440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10266 (or 10262 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20222142440 its reverse (4424122202), we get a palindrome (24646264642).

The spelling of 20222142440 in words is "twenty billion, two hundred twenty-two million, one hundred forty-two thousand, four hundred forty".