2101451201 has 4 divisors (see below), whose sum is σ = 2101851312. Its totient is φ = 2101051092.

The previous prime is 2101451197. The next prime is 2101451207. The reversal of 2101451201 is 1021541012.

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 2101451201 - 2² = 2101451197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101451201.

It is not an unprimeable number, because it can be changed into a prime (2101451207) 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, 192071 + ... + 202716.

It is an arithmetic number, because the mean of its divisors is an integer number (525462828).

Almost surely, 2^2101451201 is an apocalyptic number.

It is an amenable number.

2101451201 is a deficient number, since it is larger than the sum of its proper divisors (400111).

2101451201 is an equidigital number, since it uses as much as digits as its factorization.

2101451201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400110.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2101451201 is about 45841.5881160328. The cubic root of 2101451201 is about 1280.8740776626.

Adding to 2101451201 its reverse (1021541012), we get a palindrome (3122992213).

The spelling of 2101451201 in words is "two billion, one hundred one million, four hundred fifty-one thousand, two hundred one".