20050122440 has 32 divisors (see below), whose sum is σ = 45134039160. Its totient is φ = 8016268800.

The previous prime is 20050122413. The next prime is 20050122451. The reversal of 20050122440 is 4422105002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19898487844 + 151634596 = 141062^2 + 12314^2 .

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

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, 31421 + ... + 202700.

Almost surely, 2^20050122440 is an apocalyptic number.

20050122440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20050122440 is an abundant number, since it is smaller than the sum of its proper divisors (25083916720).

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

20050122440 is a wasteful number, since it uses less digits than its factorization.

20050122440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236273 (or 236269 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 20050122440 its reverse (4422105002), we get a palindrome (24472227442).

The spelling of 20050122440 in words is "twenty billion, fifty million, one hundred twenty-two thousand, four hundred forty".