212303121303 has 72 divisors (see below), whose sum is σ = 352465776768. Its totient is φ = 111298809024.

The previous prime is 212303121299. The next prime is 212303121311. The reversal of 212303121303 is 303121303212.

It is not a de Polignac number, because 212303121303 - 2² = 212303121299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 212303121303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303121353) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 113712576 + ... + 113714442.

Almost surely, 2^212303121303 is an apocalyptic number.

212303121303 is a deficient number, since it is larger than the sum of its proper divisors (140162655465).

212303121303 is a wasteful number, since it uses less digits than its factorization.

212303121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261 (or 2069 counting only the distinct ones).

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

Adding to 212303121303 its reverse (303121303212), we get a palindrome (515424424515).

The spelling of 212303121303 in words is "two hundred twelve billion, three hundred three million, one hundred twenty-one thousand, three hundred three".