20422222040 has 32 divisors (see below), whose sum is σ = 50127273360. Its totient is φ = 7426262400.

The previous prime is 20422222021. The next prime is 20422222097. The reversal of 20422222040 is 4022222402.

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

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, 23206631 + ... + 23207510.

Almost surely, 2^20422222040 is an apocalyptic number.

20422222040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20422222040 is an abundant number, since it is smaller than the sum of its proper divisors (29705051320).

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

20422222040 is a wasteful number, since it uses less digits than its factorization.

20422222040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46414163 (or 46414159 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20422222040 its reverse (4022222402), we get a palindrome (24444444442).

The spelling of 20422222040 in words is "twenty billion, four hundred twenty-two million, two hundred twenty-two thousand, forty".