20201202203220 has 72 divisors (see below), whose sum is σ = 61303519597320. Its totient is φ = 5384654104320.

The previous prime is 20201202203197. The next prime is 20201202203227. The reversal of 20201202203220 is 2230220210202.

20201202203220 is a `hidden beast` number, since 2 + 0 + 2 + 0 + 120 + 220 + 322 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4815619580304 + 15385582622916 = 2194452^2 + 3922446^2 .

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 = 20201202203193 and 20201202203202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201202203227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23886871 + ... + 24718110.

It is an arithmetic number, because the mean of its divisors is an integer number (851437772185).

Almost surely, 2^{20201202203220} is an apocalyptic number.

20201202203220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201202203220 is an abundant number, since it is smaller than the sum of its proper divisors (41102317394100).

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

20201202203220 is a wasteful number, since it uses less digits than its factorization.

20201202203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48607305 (or 48607300 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20201202203220 its reverse (2230220210202), we get a palindrome (22431422413422).

The spelling of 20201202203220 in words is "twenty trillion, two hundred one billion, two hundred two million, two hundred three thousand, two hundred twenty".