20403232202220 has 192 divisors, whose sum is σ = 65429862220800. Its totient is φ = 4653636092928.

The previous prime is 20403232202183. The next prime is 20403232202237. The reversal of 20403232202220 is 2220223230402.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 771754842 + ... + 771781278.

It is an arithmetic number, because the mean of its divisors is an integer number (340780532400).

Almost surely, 2^{20403232202220} is an apocalyptic number.

20403232202220 is a gapful number since it is divisible by the number (20) 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 20403232202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32714931110400).

20403232202220 is an abundant number, since it is smaller than the sum of its proper divisors (45026630018580).

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

20403232202220 is a wasteful number, since it uses less digits than its factorization.

20403232202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30312 (or 30310 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20403232202220 its reverse (2220223230402), we get a palindrome (22623455432622).

The spelling of 20403232202220 in words is "twenty trillion, four hundred three billion, two hundred thirty-two million, two hundred two thousand, two hundred twenty".