210201220211220 has 576 divisors, whose sum is σ = 774853567488000. Its totient is φ = 45054599611392.

The previous prime is 210201220211209. The next prime is 210201220211249. The reversal of 210201220211220 is 22112022102012.

It is a happy number.

210201220211220 is a `hidden beast` number, since 2 + 1 + 0 + 201 + 220 + 21 + 1 + 220 = 666.

210201220211220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 210201220211193 and 210201220211202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5693559921 + ... + 5693596839.

It is an arithmetic number, because the mean of its divisors is an integer number (1345231888000).

Almost surely, 2^{210201220211220} is an apocalyptic number.

210201220211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210201220211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387426783744000).

210201220211220 is an abundant number, since it is smaller than the sum of its proper divisors (564652347276780).

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

210201220211220 is a wasteful number, since it uses less digits than its factorization.

210201220211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39372 (or 39367 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210201220211220 its reverse (22112022102012), we get a palindrome (232313242313232).

The spelling of 210201220211220 in words is "two hundred ten trillion, two hundred one billion, two hundred twenty million, two hundred eleven thousand, two hundred twenty".