210012120210111 has 16 divisors (see below), whose sum is σ = 280331243378688. Its totient is φ = 139850545593600.

The previous prime is 210012120210103. The next prime is 210012120210143. The reversal of 210012120210111 is 111012021210012.

It is a happy number.

It is not a de Polignac number, because 210012120210111 - 2³ = 210012120210103 is a prime.

It is a super-2 number, since 2×210012120210111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012120210811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122357346 + ... + 124061856.

It is an arithmetic number, because the mean of its divisors is an integer number (17520702711168).

Almost surely, 2^{210012120210111} is an apocalyptic number.

210012120210111 is a deficient number, since it is larger than the sum of its proper divisors (70319123168577).

210012120210111 is a wasteful number, since it uses less digits than its factorization.

210012120210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750702.

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

Adding to 210012120210111 its reverse (111012021210012), we get a palindrome (321024141420123).

Subtracting from 210012120210111 its reverse (111012021210012), we obtain a palindrome (99000099000099).

The spelling of 210012120210111 in words is "two hundred ten trillion, twelve billion, one hundred twenty million, two hundred ten thousand, one hundred eleven".