2010020101 has 4 divisors (see below), whose sum is σ = 2010354604. Its totient is φ = 2009685600.

The previous prime is 2010020099. The next prime is 2010020113. The reversal of 2010020101 is 1010200102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1010200102 = 2 ⋅505100051.

It can be written as a sum of positive squares in 2 ways, for example, as 1144130625 + 865889476 = 33825^2 + 29426^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010020101 - 2¹ = 2010020099 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 (2010020171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158070 + ... + 170311.

It is an arithmetic number, because the mean of its divisors is an integer number (502588651).

Almost surely, 2^2010020101 is an apocalyptic number.

It is an amenable number.

2010020101 is a deficient number, since it is larger than the sum of its proper divisors (334503).

2010020101 is an equidigital number, since it uses as much as digits as its factorization.

2010020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334502.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2010020101 is about 44833.2477186295. The cubic root of 2010020101 is about 1262.0216351400.

Adding to 2010020101 its reverse (1010200102), we get a palindrome (3020220203).

The spelling of 2010020101 in words is "two billion, ten million, twenty thousand, one hundred one".