210111002012101 has 12 divisors (see below), whose sum is σ = 215977732106500. Its totient is φ = 204398989436160.

The previous prime is 210111002012083. The next prime is 210111002012137. The reversal of 210111002012101 is 101210200111012.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4770843219076 + 205340158793025 = 2184226^2 + 14329695^2 .

It is not a de Polignac number, because 210111002012101 - 2⁷ = 210111002011973 is a prime.

It is a super-2 number, since 2×210111002012101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111002012501) 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, 178484496 + ... + 179657833.

Almost surely, 2^{210111002012101} is an apocalyptic number.

It is an amenable number.

210111002012101 is a deficient number, since it is larger than the sum of its proper divisors (5866730094399).

210111002012101 is an equidigital number, since it uses as much as digits as its factorization.

210111002012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358142760 (or 358142719 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210111002012101 its reverse (101210200111012), we get a palindrome (311321202123113).

The spelling of 210111002012101 in words is "two hundred ten trillion, one hundred eleven billion, two million, twelve thousand, one hundred one".