212103103331 has 4 divisors (see below), whose sum is σ = 242403546672. Its totient is φ = 181802659992.

The previous prime is 212103103319. The next prime is 212103103339. The reversal of 212103103331 is 133301301212.

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 212103103331 - 2¹⁰ = 212103102307 is a prime.

It is a super-2 number, since 2×212103103331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212103103339) 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, 15150221660 + ... + 15150221673.

It is an arithmetic number, because the mean of its divisors is an integer number (60600886668).

Almost surely, 2^212103103331 is an apocalyptic number.

212103103331 is a deficient number, since it is larger than the sum of its proper divisors (30300443341).

212103103331 is an equidigital number, since it uses as much as digits as its factorization.

212103103331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30300443340.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 212103103331 its reverse (133301301212), we get a palindrome (345404404543).

The spelling of 212103103331 in words is "two hundred twelve billion, one hundred three million, one hundred three thousand, three hundred thirty-one".