20420422001232 has 180 divisors, whose sum is σ = 59244432988608. Its totient is φ = 6056343145600.

The previous prime is 20420422001219. The next prime is 20420422001237. The reversal of 20420422001232 is 23210022402402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420422001237) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12034057 + ... + 13625687.

Almost surely, 2^{20420422001232} is an apocalyptic number.

20420422001232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20420422001232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29622216494304).

20420422001232 is an abundant number, since it is smaller than the sum of its proper divisors (38824010987376).

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

20420422001232 is a wasteful number, since it uses less digits than its factorization.

20420422001232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591758 (or 1591694 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20420422001232 its reverse (23210022402402), we get a palindrome (43630444403634).

The spelling of 20420422001232 in words is "twenty trillion, four hundred twenty billion, four hundred twenty-two million, one thousand, two hundred thirty-two".