211023132212221 has 4 divisors (see below), whose sum is σ = 241169293956832. Its totient is φ = 180876970467612.

The previous prime is 211023132212213. The next prime is 211023132212237. The reversal of 211023132212221 is 122212231320112.

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 211023132212221 - 2³ = 211023132212213 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 (211023132212621) 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, 15073080872295 + ... + 15073080872308.

It is an arithmetic number, because the mean of its divisors is an integer number (60292323489208).

Almost surely, 2^{211023132212221} is an apocalyptic number.

It is an amenable number.

211023132212221 is a deficient number, since it is larger than the sum of its proper divisors (30146161744611).

211023132212221 is an equidigital number, since it uses as much as digits as its factorization.

211023132212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30146161744610.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 211023132212221 its reverse (122212231320112), we get a palindrome (333235363532333).

The spelling of 211023132212221 in words is "two hundred eleven trillion, twenty-three billion, one hundred thirty-two million, two hundred twelve thousand, two hundred twenty-one".