212021113313 has 4 divisors (see below), whose sum is σ = 212022567168. Its totient is φ = 212019659460.

The previous prime is 212021113301. The next prime is 212021113321. The reversal of 212021113313 is 313311120212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212021113313 - 2¹² = 212021109217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021113813) 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, 480281 + ... + 809142.

It is an arithmetic number, because the mean of its divisors is an integer number (53005641792).

Almost surely, 2^212021113313 is an apocalyptic number.

It is an amenable number.

212021113313 is a deficient number, since it is larger than the sum of its proper divisors (1453855).

212021113313 is a wasteful number, since it uses less digits than its factorization.

212021113313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453854.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 212021113313 its reverse (313311120212), we get a palindrome (525332233525).

The spelling of 212021113313 in words is "two hundred twelve billion, twenty-one million, one hundred thirteen thousand, three hundred thirteen".