20210100101 has 16 divisors (see below), whose sum is σ = 21498825600. Its totient is φ = 18944136000.

The previous prime is 20210100047. The next prime is 20210100107. The reversal of 20210100101 is 10100101202.

It is a cyclic number.

It is not a de Polignac number, because 20210100101 - 2⁶ = 20210100037 is a prime.

It is a super-3 number, since 3×20210100101³ (a number of 32 digits) contains 333 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 (20210100107) 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, 4106120 + ... + 4111038.

It is an arithmetic number, because the mean of its divisors is an integer number (1343676600).

Almost surely, 2^20210100101 is an apocalyptic number.

It is an amenable number.

20210100101 is a deficient number, since it is larger than the sum of its proper divisors (1288725499).

20210100101 is a wasteful number, since it uses less digits than its factorization.

20210100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7180.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20210100101 its reverse (10100101202), we get a palindrome (30310201303).

It can be divided in two parts, 202 and 10100101, that multiplied together give a palindrome (2040220402).

The spelling of 20210100101 in words is "twenty billion, two hundred ten million, one hundred thousand, one hundred one".