211020000101 has 4 divisors (see below), whose sum is σ = 211026614400. Its totient is φ = 211013385804.

The previous prime is 211020000071. The next prime is 211020000131. The reversal of 211020000101 is 101000020112.

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 an interprime number because it is at equal distance from previous prime (211020000071) and next prime (211020000131).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211020000101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020000131) 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, 3259061 + ... + 3323178.

It is an arithmetic number, because the mean of its divisors is an integer number (52756653600).

Almost surely, 2^211020000101 is an apocalyptic number.

It is an amenable number.

211020000101 is a deficient number, since it is larger than the sum of its proper divisors (6614299).

211020000101 is an equidigital number, since it uses as much as digits as its factorization.

211020000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6614298.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 211020000101 its reverse (101000020112), we get a palindrome (312020020213).

The spelling of 211020000101 in words is "two hundred eleven billion, twenty million, one hundred one", and thus it is an aban number.