210101221133 has 4 divisors (see below), whose sum is σ = 221159180160. Its totient is φ = 199043262108.

The previous prime is 210101221111. The next prime is 210101221139. The reversal of 210101221133 is 331122101012.

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 210101221133 - 2³⁶ = 141381744397 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 (210101221139) 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, 5528979485 + ... + 5528979522.

It is an arithmetic number, because the mean of its divisors is an integer number (55289795040).

Almost surely, 2^210101221133 is an apocalyptic number.

It is an amenable number.

210101221133 is a deficient number, since it is larger than the sum of its proper divisors (11057959027).

210101221133 is a wasteful number, since it uses less digits than its factorization.

210101221133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11057959026.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 210101221133 its reverse (331122101012), we get a palindrome (541223322145).

The spelling of 210101221133 in words is "two hundred ten billion, one hundred one million, two hundred twenty-one thousand, one hundred thirty-three".