201121200210 has 96 divisors (see below), whose sum is σ = 561796264512. Its totient is φ = 45946104960.

The previous prime is 201121200199. The next prime is 201121200211. The reversal of 201121200210 is 12002121102.

It is not an unprimeable number, because it can be changed into a prime (201121200211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2803144 + ... + 2873996.

It is an arithmetic number, because the mean of its divisors is an integer number (5852044422).

Almost surely, 2^201121200210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201121200210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280898132256).

201121200210 is an abundant number, since it is smaller than the sum of its proper divisors (360675064302).

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

201121200210 is a wasteful number, since it uses less digits than its factorization.

201121200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72808 (or 72801 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201121200210 its reverse (12002121102), we get a palindrome (213123321312).

The spelling of 201121200210 in words is "two hundred one billion, one hundred twenty-one million, two hundred thousand, two hundred ten".