212021103331 has 12 divisors (see below), whose sum is σ = 212922080896. Its totient is φ = 211123612800.

The previous prime is 212021103313. The next prime is 212021103337. The reversal of 212021103331 is 133301120212.

It is a de Polignac number, because none of the positive numbers 2^k-212021103331 is a prime.

It is a super-2 number, since 2×212021103331² (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 = 212021103299 and 212021103308.

It is not an unprimeable number, because it can be changed into a prime (212021103337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174790081 + ... + 174791293.

Almost surely, 2^212021103331 is an apocalyptic number.

212021103331 is a deficient number, since it is larger than the sum of its proper divisors (900977565).

212021103331 is an equidigital number, since it uses as much as digits as its factorization.

212021103331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102 (or 2701 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212021103331 its reverse (133301120212), we get a palindrome (345322223543).

The spelling of 212021103331 in words is "two hundred twelve billion, twenty-one million, one hundred three thousand, three hundred thirty-one".