201111021210 has 128 divisors (see below), whose sum is σ = 564716759040. Its totient is φ = 45316627200.

The previous prime is 201111021149. The next prime is 201111021217. The reversal of 201111021210 is 12120111102.

It is not an unprimeable number, because it can be changed into a prime (201111021217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29715 + ... + 634905.

It is an arithmetic number, because the mean of its divisors is an integer number (4411849680).

Almost surely, 2^201111021210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201111021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282358379520).

201111021210 is an abundant number, since it is smaller than the sum of its proper divisors (363605737830).

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

201111021210 is a wasteful number, since it uses less digits than its factorization.

201111021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605284.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 201111021210 its reverse (12120111102), we get a palindrome (213231132312).

The spelling of 201111021210 in words is "two hundred one billion, one hundred eleven million, twenty-one thousand, two hundred ten".