2010201021 has 6 divisors (see below), whose sum is σ = 2903623710. Its totient is φ = 1340134008.

The previous prime is 2010201001. The next prime is 2010201113. The reversal of 2010201021 is 1201020102.

It can be written as a sum of positive squares in only one way, i.e., 1935032121 + 75168900 = 43989^2 + 8670^2 .

It is not a de Polignac number, because 2010201021 - 2⁹ = 2010200509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 223355669 = 2010201021 / (2 + 0 + 1 + 0 + 2 + 0 + 1 + 0 + 2 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 2010200994 and 2010201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010201001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111677826 + ... + 111677843.

It is an arithmetic number, because the mean of its divisors is an integer number (483937285).

Almost surely, 2^2010201021 is an apocalyptic number.

It is an amenable number.

2010201021 is a deficient number, since it is larger than the sum of its proper divisors (893422689).

2010201021 is a wasteful number, since it uses less digits than its factorization.

2010201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223355675 (or 223355672 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2010201021 is about 44835.2653722491. The cubic root of 2010201021 is about 1262.0594984602.

Adding to 2010201021 its reverse (1201020102), we get a palindrome (3211221123).

The spelling of 2010201021 in words is "two billion, ten million, two hundred one thousand, twenty-one".