20401023422 has 32 divisors (see below), whose sum is σ = 33532531200. Its totient is φ = 9251167968.

The previous prime is 20401023421. The next prime is 20401023457. The reversal of 20401023422 is 22432010402.

It is a junction number, because it is equal to n+sod(n) for n = 20401023394 and 20401023403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401023421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5089343 + ... + 5093349.

It is an arithmetic number, because the mean of its divisors is an integer number (1047891600).

Almost surely, 2^20401023422 is an apocalyptic number.

20401023422 is a deficient number, since it is larger than the sum of its proper divisors (13131507778).

20401023422 is a wasteful number, since it uses less digits than its factorization.

20401023422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7400.

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

Adding to 20401023422 its reverse (22432010402), we get a palindrome (42833033824).

The spelling of 20401023422 in words is "twenty billion, four hundred one million, twenty-three thousand, four hundred twenty-two".