201001221210 has 96 divisors (see below), whose sum is σ = 497335541760. Its totient is φ = 51988472320.

The previous prime is 201001221193. The next prime is 201001221319. The reversal of 201001221210 is 12122100102.

201001221210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201001221210² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8712871 + ... + 8735909.

It is an arithmetic number, because the mean of its divisors is an integer number (5180578560).

Almost surely, 2^201001221210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201001221210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248667770880).

201001221210 is an abundant number, since it is smaller than the sum of its proper divisors (296334320550).

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

201001221210 is a wasteful number, since it uses less digits than its factorization.

201001221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23304 (or 23263 counting only the distinct ones).

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

Adding to 201001221210 its reverse (12122100102), we get a palindrome (213123321312).

The spelling of 201001221210 in words is "two hundred one billion, one million, two hundred twenty-one thousand, two hundred ten".