210020111102101 has 4 divisors (see below), whose sum is σ = 210044034121600. Its totient is φ = 209996188082604.

The previous prime is 210020111102033. The next prime is 210020111102111. The reversal of 210020111102101 is 101201111020012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210020111102101 - 2¹¹ = 210020111100053 is a prime.

It is a super-2 number, since 2×210020111102101² (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 (210020111102111) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11961496581 + ... + 11961514138.

It is an arithmetic number, because the mean of its divisors is an integer number (52511008530400).

Almost surely, 2^{210020111102101} is an apocalyptic number.

It is an amenable number.

210020111102101 is a deficient number, since it is larger than the sum of its proper divisors (23923019499).

210020111102101 is an equidigital number, since it uses as much as digits as its factorization.

210020111102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23923019498.

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

Adding to 210020111102101 its reverse (101201111020012), we get a palindrome (311221222122113).

The spelling of 210020111102101 in words is "two hundred ten trillion, twenty billion, one hundred eleven million, one hundred two thousand, one hundred one".