20210110101 has 24 divisors (see below), whose sum is σ = 29696940000. Its totient is φ = 13240684512.

The previous prime is 20210110099. The next prime is 20210110103. The reversal of 20210110101 is 10101101202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20210110099) and next prime (20210110103).

It is not a de Polignac number, because 20210110101 - 2¹ = 20210110099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210110103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2746375 + ... + 2753723.

It is an arithmetic number, because the mean of its divisors is an integer number (1237372500).

Almost surely, 2^20210110101 is an apocalyptic number.

It is an amenable number.

20210110101 is a deficient number, since it is larger than the sum of its proper divisors (9486829899).

20210110101 is a wasteful number, since it uses less digits than its factorization.

20210110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12593 (or 12590 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20210110101 its reverse (10101101202), we get a palindrome (30311211303).

The spelling of 20210110101 in words is "twenty billion, two hundred ten million, one hundred ten thousand, one hundred one".