212133303131 has 4 divisors (see below), whose sum is σ = 212662314264. Its totient is φ = 211604292000.

The previous prime is 212133303097. The next prime is 212133303169. The reversal of 212133303131 is 131303331212.

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 212133303131 - 2¹⁴ = 212133286747 is a prime.

It is a super-2 number, since 2×212133303131² (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 = 212133303097 and 212133303106.

It is not an unprimeable number, because it can be changed into a prime (212183303131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264504965 + ... + 264505766.

It is an arithmetic number, because the mean of its divisors is an integer number (53165578566).

Almost surely, 2^212133303131 is an apocalyptic number.

212133303131 is a deficient number, since it is larger than the sum of its proper divisors (529011133).

212133303131 is an equidigital number, since it uses as much as digits as its factorization.

212133303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529011132.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 212133303131 its reverse (131303331212), we get a palindrome (343436634343).

The spelling of 212133303131 in words is "two hundred twelve billion, one hundred thirty-three million, three hundred three thousand, one hundred thirty-one".