210111012101 has 16 divisors (see below), whose sum is σ = 216305369280. Its totient is φ = 203977388160.

The previous prime is 210111012079. The next prime is 210111012113. The reversal of 210111012101 is 101210111012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210111012101 is a prime.

It is a super-2 number, since 2×210111012101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111012161) 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, 16252226 + ... + 16265148.

It is an arithmetic number, because the mean of its divisors is an integer number (13519085580).

Almost surely, 2^210111012101 is an apocalyptic number.

It is an amenable number.

210111012101 is a deficient number, since it is larger than the sum of its proper divisors (6194357179).

210111012101 is a wasteful number, since it uses less digits than its factorization.

210111012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15236.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 210111012101 its reverse (101210111012), we get a palindrome (311321123113).

It can be divided in two parts, 210111012 and 101, that multiplied together give a palindrome (21221212212).

The spelling of 210111012101 in words is "two hundred ten billion, one hundred eleven million, twelve thousand, one hundred one".