201111012021210 has 64 divisors (see below), whose sum is σ = 512804966428800. Its totient is φ = 50380838790912.

The previous prime is 201111012021167. The next prime is 201111012021229. The reversal of 201111012021210 is 12120210111102.

It is a happy number.

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 201111012021210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3123779740 + ... + 3123844119.

It is an arithmetic number, because the mean of its divisors is an integer number (8012577600450).

Almost surely, 2^{201111012021210} is an apocalyptic number.

201111012021210 is an abundant number, since it is smaller than the sum of its proper divisors (311693954407590).

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

201111012021210 is a wasteful number, since it uses less digits than its factorization.

201111012021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6247623935.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201111012021210 its reverse (12120210111102), we get a palindrome (213231222132312).

The spelling of 201111012021210 in words is "two hundred one trillion, one hundred eleven billion, twelve million, twenty-one thousand, two hundred ten".