212132221323331 has 4 divisors (see below), whose sum is σ = 212138367801832. Its totient is φ = 212126074844832.

The previous prime is 212132221323329. The next prime is 212132221323389. The reversal of 212132221323331 is 133323122231212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212132221323331 - 2¹ = 212132221323329 is a prime.

It is a super-2 number, since 2×212132221323331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212132221323293 and 212132221323302.

It is not an unprimeable number, because it can be changed into a prime (212132221323301) 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, 3073187481 + ... + 3073256506.

It is an arithmetic number, because the mean of its divisors is an integer number (53034591950458).

Almost surely, 2^{212132221323331} is an apocalyptic number.

212132221323331 is a deficient number, since it is larger than the sum of its proper divisors (6146478501).

212132221323331 is an equidigital number, since it uses as much as digits as its factorization.

212132221323331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6146478500.

The product of its digits is 15552, while the sum is 31.

Adding to 212132221323331 its reverse (133323122231212), we get a palindrome (345455343554543).

The spelling of 212132221323331 in words is "two hundred twelve trillion, one hundred thirty-two billion, two hundred twenty-one million, three hundred twenty-three thousand, three hundred thirty-one".