212303313021 has 8 divisors (see below), whose sum is σ = 295378522560. Its totient is φ = 135381822752.

The previous prime is 212303312971. The next prime is 212303313037. The reversal of 212303313021 is 120313303212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212303313021 - 2⁹ = 212303312509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303313821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1538429736 + ... + 1538429873.

It is an arithmetic number, because the mean of its divisors is an integer number (36922315320).

Almost surely, 2^212303313021 is an apocalyptic number.

It is an amenable number.

212303313021 is a deficient number, since it is larger than the sum of its proper divisors (83075209539).

212303313021 is a wasteful number, since it uses less digits than its factorization.

212303313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076859635.

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

Adding to 212303313021 its reverse (120313303212), we get a palindrome (332616616233).

The spelling of 212303313021 in words is "two hundred twelve billion, three hundred three million, three hundred thirteen thousand, twenty-one".