211320101 has 4 divisors (see below), whose sum is σ = 211466400. Its totient is φ = 211173804.

The previous prime is 211320091. The next prime is 211320107. The reversal of 211320101 is 101023112.

211320101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-211320101 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 (211320107) 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, 70961 + ... + 73878.

It is an arithmetic number, because the mean of its divisors is an integer number (52866600).

Almost surely, 2^211320101 is an apocalyptic number.

It is an amenable number.

211320101 is a deficient number, since it is larger than the sum of its proper divisors (146299).

211320101 is a wasteful number, since it uses less digits than its factorization.

211320101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146298.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 211320101 is about 14536.8532014326. The cubic root of 211320101 is about 595.6350830205.

Adding to 211320101 its reverse (101023112), we get a palindrome (312343213).

The spelling of 211320101 in words is "two hundred eleven million, three hundred twenty thousand, one hundred one".