20213204032220 has 24 divisors (see below), whose sum is σ = 42985041489600. Its totient is φ = 7982936275392.

The previous prime is 20213204032129. The next prime is 20213204032243. The reversal of 20213204032220 is 2223040231202.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6396581975 + ... + 6396585134.

It is an arithmetic number, because the mean of its divisors is an integer number (1791043395400).

Almost surely, 2^{20213204032220} is an apocalyptic number.

20213204032220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20213204032220 is an abundant number, since it is smaller than the sum of its proper divisors (22771837457380).

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

20213204032220 is a wasteful number, since it uses less digits than its factorization.

20213204032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12793167197 (or 12793167195 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20213204032220 its reverse (2223040231202), we get a palindrome (22436244263422).

The spelling of 20213204032220 in words is "twenty trillion, two hundred thirteen billion, two hundred four million, thirty-two thousand, two hundred twenty".