210111212102001 has 12 divisors (see below), whose sum is σ = 325886777954352. Its totient is φ = 120063549772488.

The previous prime is 210111212101943. The next prime is 210111212102017. The reversal of 210111212102001 is 100201212111012.

It is a happy number.

It is not a de Polignac number, because 210111212102001 - 2¹¹ = 210111212099953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210111212106001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 714663986595 + ... + 714663986888.

It is an arithmetic number, because the mean of its divisors is an integer number (27157231496196).

Almost surely, 2^{210111212102001} is an apocalyptic number.

210111212102001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210111212102001 is a deficient number, since it is larger than the sum of its proper divisors (115775565852351).

210111212102001 is a wasteful number, since it uses less digits than its factorization.

210111212102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429327973500 (or 1429327973493 counting only the distinct ones).

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

Adding to 210111212102001 its reverse (100201212111012), we get a palindrome (310312424213013).

The spelling of 210111212102001 in words is "two hundred ten trillion, one hundred eleven billion, two hundred twelve million, one hundred two thousand, one".