212132220033121 has 4 divisors (see below), whose sum is σ = 212150810196144. Its totient is φ = 212113629870100.

The previous prime is 212132220033101. The next prime is 212132220033169. The reversal of 212132220033121 is 121330022231212.

212132220033121 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 not a de Polignac number, because 212132220033121 - 2⁵ = 212132220033089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212132220033101) 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, 9295064395 + ... + 9295087216.

It is an arithmetic number, because the mean of its divisors is an integer number (53037702549036).

Almost surely, 2^{212132220033121} is an apocalyptic number.

It is an amenable number.

212132220033121 is a deficient number, since it is larger than the sum of its proper divisors (18590163023).

212132220033121 is a wasteful number, since it uses less digits than its factorization.

212132220033121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18590163022.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 212132220033121 its reverse (121330022231212), we get a palindrome (333462242264333).

The spelling of 212132220033121 in words is "two hundred twelve trillion, one hundred thirty-two billion, two hundred twenty million, thirty-three thousand, one hundred twenty-one".