201220020211110 has 128 divisors (see below), whose sum is σ = 502005857904000. Its totient is φ = 51557099016192.

The previous prime is 201220020211097. The next prime is 201220020211151. The reversal of 201220020211110 is 11112020022102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201220020211110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 411962794 + ... + 412450946.

It is an arithmetic number, because the mean of its divisors is an integer number (3921920764875).

Almost surely, 2^{201220020211110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201220020211110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251002928952000).

201220020211110 is an abundant number, since it is smaller than the sum of its proper divisors (300785837692890).

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

201220020211110 is a wasteful number, since it uses less digits than its factorization.

201220020211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490490.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201220020211110 its reverse (11112020022102), we get a palindrome (212332040233212).

The spelling of 201220020211110 in words is "two hundred one trillion, two hundred twenty billion, twenty million, two hundred eleven thousand, one hundred ten".