2101211201 has 4 divisors (see below), whose sum is σ = 2113793472. Its totient is φ = 2088628932.

The previous prime is 2101211179. The next prime is 2101211239. The reversal of 2101211201 is 1021121012.

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 2101211201 - 2²² = 2097016897 is a prime.

It is a super-2 number, since 2×2101211201² = 8830177022415724802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101211251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6290885 + ... + 6291218.

It is an arithmetic number, because the mean of its divisors is an integer number (528448368).

Almost surely, 2^2101211201 is an apocalyptic number.

It is an amenable number.

2101211201 is a deficient number, since it is larger than the sum of its proper divisors (12582271).

2101211201 is a wasteful number, since it uses less digits than its factorization.

2101211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12582270.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2101211201 is about 45838.9703309313. The cubic root of 2101211201 is about 1280.8253142997.

Adding to 2101211201 its reverse (1021121012), we get a palindrome (3122332213).

The spelling of 2101211201 in words is "two billion, one hundred one million, two hundred eleven thousand, two hundred one".