211003310021 has 8 divisors (see below), whose sum is σ = 255331736640. Its totient is φ = 170221157568.

The previous prime is 211003310009. The next prime is 211003310027. The reversal of 211003310021 is 120013300112.

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

It is a de Polignac number, because none of the positive numbers 2^k-211003310021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211003309978 and 211003310005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211003310027) 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, 886568411 + ... + 886568648.

It is an arithmetic number, because the mean of its divisors is an integer number (31916467080).

Almost surely, 2^211003310021 is an apocalyptic number.

It is an amenable number.

211003310021 is a deficient number, since it is larger than the sum of its proper divisors (44328426619).

211003310021 is a wasteful number, since it uses less digits than its factorization.

211003310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773137083.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 211003310021 its reverse (120013300112), we get a palindrome (331016610133).

Subtracting from 211003310021 its reverse (120013300112), we obtain a palindrome (90990009909).

The spelling of 211003310021 in words is "two hundred eleven billion, three million, three hundred ten thousand, twenty-one".