20122401432 has 128 divisors (see below), whose sum is σ = 59098152960. Its totient is φ = 5589924480.

The previous prime is 20122401367. The next prime is 20122401433. The reversal of 20122401432 is 23410422102.

It is a super-2 number, since 2×20122401432² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20122401399 and 20122401408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122401433) 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 31 ways as a sum of consecutive naturals, for example, 1604707 + ... + 1617197.

It is an arithmetic number, because the mean of its divisors is an integer number (461704320).

Almost surely, 2^20122401432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122401432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29549076480).

20122401432 is an abundant number, since it is smaller than the sum of its proper divisors (38975751528).

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

20122401432 is a wasteful number, since it uses less digits than its factorization.

20122401432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12773 (or 12769 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20122401432 its reverse (23410422102), we get a palindrome (43532823534).

The spelling of 20122401432 in words is "twenty billion, one hundred twenty-two million, four hundred one thousand, four hundred thirty-two".