20031032021220 has 168 divisors, whose sum is σ = 68802436463040. Its totient is φ = 4856007723840.

The previous prime is 20031032021213. The next prime is 20031032021239. The reversal of 20031032021220 is 2212023013002.

20031032021220 is a `hidden beast` number, since 2 + 0 + 0 + 310 + 320 + 2 + 12 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20031032021193 and 20031032021202.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 62288280 + ... + 62609039.

It is an arithmetic number, because the mean of its divisors is an integer number (409538312280).

Almost surely, 2^{20031032021220} is an apocalyptic number.

20031032021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031032021220 is an abundant number, since it is smaller than the sum of its proper divisors (48771404441820).

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

20031032021220 is a wasteful number, since it uses less digits than its factorization.

20031032021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124897357 (or 124897340 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20031032021220 its reverse (2212023013002), we get a palindrome (22243055034222).

The spelling of 20031032021220 in words is "twenty trillion, thirty-one billion, thirty-two million, twenty-one thousand, two hundred twenty".