212133121133 has 4 divisors (see below), whose sum is σ = 213434551488. Its totient is φ = 210831690780.

The previous prime is 212133121087. The next prime is 212133121183. The reversal of 212133121133 is 331121331212.

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 212133121133 - 2⁸ = 212133120877 is a prime.

It is a super-2 number, since 2×212133121133² (a number of 23 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 = 212133121099 and 212133121108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212133121183) 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, 650714933 + ... + 650715258.

It is an arithmetic number, because the mean of its divisors is an integer number (53358637872).

Almost surely, 2^212133121133 is an apocalyptic number.

It is an amenable number.

212133121133 is a deficient number, since it is larger than the sum of its proper divisors (1301430355).

212133121133 is a wasteful number, since it uses less digits than its factorization.

212133121133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301430354.

The product of its digits is 648, while the sum is 23.

Adding to 212133121133 its reverse (331121331212), we get a palindrome (543254452345).

The spelling of 212133121133 in words is "two hundred twelve billion, one hundred thirty-three million, one hundred twenty-one thousand, one hundred thirty-three".