212120133311 has 8 divisors (see below), whose sum is σ = 212533783584. Its totient is φ = 211706563680.

The previous prime is 212120133307. The next prime is 212120133343. The reversal of 212120133311 is 113331021212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212120133311 - 2² = 212120133307 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 (212120133611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9734150 + ... + 9755916.

It is an arithmetic number, because the mean of its divisors is an integer number (26566722948).

Almost surely, 2^212120133311 is an apocalyptic number.

212120133311 is a deficient number, since it is larger than the sum of its proper divisors (413650273).

212120133311 is a wasteful number, since it uses less digits than its factorization.

212120133311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40321.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 212120133311 its reverse (113331021212), we get a palindrome (325451154523).

It can be divided in two parts, 2121201 and 33311, that added together give a palindrome (2154512).

The spelling of 212120133311 in words is "two hundred twelve billion, one hundred twenty million, one hundred thirty-three thousand, three hundred eleven".