20212023101 has 4 divisors (see below), whose sum is σ = 20543367804. Its totient is φ = 19880678400.

The previous prime is 20212023079. The next prime is 20212023113. The reversal of 20212023101 is 10132021202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10132021202 = 2 ⋅5066010601.

It can be written as a sum of positive squares in 2 ways, for example, as 9579319876 + 10632703225 = 97874^2 + 103115^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212023101 - 2⁶ = 20212023037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212023001) 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, 165672260 + ... + 165672381.

It is an arithmetic number, because the mean of its divisors is an integer number (5135841951).

Almost surely, 2^20212023101 is an apocalyptic number.

It is an amenable number.

20212023101 is a deficient number, since it is larger than the sum of its proper divisors (331344703).

20212023101 is an equidigital number, since it uses as much as digits as its factorization.

20212023101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331344702.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20212023101 its reverse (10132021202), we get a palindrome (30344044303).

The spelling of 20212023101 in words is "twenty billion, two hundred twelve million, twenty-three thousand, one hundred one".