2101021201 has 4 divisors (see below), whose sum is σ = 2112021504. Its totient is φ = 2090020900.

The previous prime is 2101021193. The next prime is 2101021217. The reversal of 2101021201 is 1021201012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2101021201 - 2³ = 2101021193 is a prime.

It is a Duffinian number.

2101021201 is a modest number, since divided by 21201 gives 2101 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2101024201) 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, 5499865 + ... + 5500246.

It is an arithmetic number, because the mean of its divisors is an integer number (528005376).

Almost surely, 2^2101021201 is an apocalyptic number.

It is an amenable number.

2101021201 is a deficient number, since it is larger than the sum of its proper divisors (11000303).

2101021201 is a wasteful number, since it uses less digits than its factorization.

2101021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000302.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2101021201 is about 45836.8978116975. The cubic root of 2101021201 is about 1280.7867073374.

Adding to 2101021201 its reverse (1021201012), we get a palindrome (3122222213).

The spelling of 2101021201 in words is "two billion, one hundred one million, twenty-one thousand, two hundred one".