201111212011010 has 64 divisors (see below), whose sum is σ = 428034466782720. Its totient is φ = 66566352814080.

The previous prime is 201111212010991. The next prime is 201111212011037. The reversal of 201111212011010 is 10110212111102.

It is a super-2 number, since 2×201111212011010² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9871115 + ... + 22353105.

It is an arithmetic number, because the mean of its divisors is an integer number (6688038543480).

Almost surely, 2^{201111212011010} is an apocalyptic number.

201111212011010 is an abundant number, since it is smaller than the sum of its proper divisors (226923254771710).

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

201111212011010 is a wasteful number, since it uses less digits than its factorization.

201111212011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12489971.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201111212011010 its reverse (10110212111102), we get a palindrome (211221424122112).

The spelling of 201111212011010 in words is "two hundred one trillion, one hundred eleven billion, two hundred twelve million, eleven thousand, ten".