212102033331 has 4 divisors (see below), whose sum is σ = 282802711112. Its totient is φ = 141401355552.

The previous prime is 212102033329. The next prime is 212102033369. The reversal of 212102033331 is 133330201212.

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

It is not a de Polignac number, because 212102033331 - 2¹ = 212102033329 is a prime.

It is a super-2 number, since 2×212102033331² (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 = 212102033298 and 212102033307.

It is not an unprimeable number, because it can be changed into a prime (212102033131) 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, 35350338886 + ... + 35350338891.

It is an arithmetic number, because the mean of its divisors is an integer number (70700677778).

Almost surely, 2^212102033331 is an apocalyptic number.

212102033331 is a deficient number, since it is larger than the sum of its proper divisors (70700677781).

212102033331 is an equidigital number, since it uses as much as digits as its factorization.

212102033331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70700677780.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 212102033331 its reverse (133330201212), we get a palindrome (345432234543).

The spelling of 212102033331 in words is "two hundred twelve billion, one hundred two million, thirty-three thousand, three hundred thirty-one".