201220021200220 has 72 divisors (see below), whose sum is σ = 464525857832400. Its totient is φ = 73161963409920.

The previous prime is 201220021200131. The next prime is 201220021200223. The reversal of 201220021200220 is 22002120022102.

201220021200220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 201220021200194 and 201220021200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220021200223) 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, 14710116 + ... + 24876244.

It is an arithmetic number, because the mean of its divisors is an integer number (6451748025450).

Almost surely, 2^{201220021200220} is an apocalyptic number.

201220021200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201220021200220 is an abundant number, since it is smaller than the sum of its proper divisors (263305836632180).

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

201220021200220 is a wasteful number, since it uses less digits than its factorization.

201220021200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10174339 (or 10174326 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 201220021200220 its reverse (22002120022102), we get a palindrome (223222141222322).

The spelling of 201220021200220 in words is "two hundred one trillion, two hundred twenty billion, twenty-one million, two hundred thousand, two hundred twenty".