20332211211220 has 24 divisors (see below), whose sum is σ = 42697731429864. Its totient is φ = 8132867744256.

The previous prime is 20332211211187. The next prime is 20332211211227. The reversal of 20332211211220 is 2211211223302.

It can be written as a sum of positive squares in 4 ways, for example, as 1638123531664 + 18694087679556 = 1279892^2 + 4323666^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20332211211191 and 20332211211200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332211211227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14674632 + ... + 16000288.

It is an arithmetic number, because the mean of its divisors is an integer number (1779072142911).

Almost surely, 2^{20332211211220} is an apocalyptic number.

20332211211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20332211211220 is an abundant number, since it is smaller than the sum of its proper divisors (22365520218644).

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

20332211211220 is a wasteful number, since it uses less digits than its factorization.

20332211211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092539 (or 2092537 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20332211211220 its reverse (2211211223302), we get a palindrome (22543422434522).

The spelling of 20332211211220 in words is "twenty trillion, three hundred thirty-two billion, two hundred eleven million, two hundred eleven thousand, two hundred twenty".