201211211000101 has 4 divisors (see below), whose sum is σ = 201211239805632. Its totient is φ = 201211182194572.

The previous prime is 201211211000099. The next prime is 201211211000183. The reversal of 201211211000101 is 101000112112102.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 201211211000101 - 2¹ = 201211211000099 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 (201211214000101) 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, 3457860 + ... + 20356306.

It is an arithmetic number, because the mean of its divisors is an integer number (50302809951408).

Almost surely, 2^{201211211000101} is an apocalyptic number.

It is an amenable number.

201211211000101 is a deficient number, since it is larger than the sum of its proper divisors (28805531).

201211211000101 is a wasteful number, since it uses less digits than its factorization.

201211211000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28805530.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201211211000101 its reverse (101000112112102), we get a palindrome (302211323112203).

The spelling of 201211211000101 in words is "two hundred one trillion, two hundred eleven billion, two hundred eleven million, one hundred one", and thus it is an aban number.