20401440122 has 16 divisors (see below), whose sum is σ = 34975825920. Its totient is φ = 8742992208.

The previous prime is 20401440119. The next prime is 20401440131. The reversal of 20401440122 is 22104410402.

It is a junction number, because it is equal to n+sod(n) for n = 20401440094 and 20401440103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360704 + ... + 413412.

It is an arithmetic number, because the mean of its divisors is an integer number (2185989120).

Almost surely, 2^20401440122 is an apocalyptic number.

20401440122 is a deficient number, since it is larger than the sum of its proper divisors (14574385798).

20401440122 is a wasteful number, since it uses less digits than its factorization.

20401440122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80365.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20401440122 its reverse (22104410402), we get a palindrome (42505850524).

The spelling of 20401440122 in words is "twenty billion, four hundred one million, four hundred forty thousand, one hundred twenty-two".