211030021313 has 4 divisors (see below), whose sum is σ = 222136864560. Its totient is φ = 199923178068.

The previous prime is 211030021247. The next prime is 211030021327. The reversal of 211030021313 is 313120030112.

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 211030021313 - 2³⁶ = 142310544577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211030021291 and 211030021300.

It is not an unprimeable number, because it can be changed into a prime (211030021343) 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, 5553421595 + ... + 5553421632.

It is an arithmetic number, because the mean of its divisors is an integer number (55534216140).

Almost surely, 2^211030021313 is an apocalyptic number.

It is an amenable number.

211030021313 is a deficient number, since it is larger than the sum of its proper divisors (11106843247).

211030021313 is a wasteful number, since it uses less digits than its factorization.

211030021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11106843246.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 211030021313 its reverse (313120030112), we get a palindrome (524150051425).

The spelling of 211030021313 in words is "two hundred eleven billion, thirty million, twenty-one thousand, three hundred thirteen".