211011010221 has 32 divisors (see below), whose sum is σ = 312247374336. Its totient is φ = 125676936000.

The previous prime is 211011010213. The next prime is 211011010237. The reversal of 211011010221 is 122010110112.

It is not a de Polignac number, because 211011010221 - 2³ = 211011010213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211011010197 and 211011010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211011010241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 817486 + ... + 1044176.

It is an arithmetic number, because the mean of its divisors is an integer number (9757730448).

Almost surely, 2^211011010221 is an apocalyptic number.

It is an amenable number.

211011010221 is a deficient number, since it is larger than the sum of its proper divisors (101236364115).

211011010221 is a wasteful number, since it uses less digits than its factorization.

211011010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227193.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211011010221 its reverse (122010110112), we get a palindrome (333021120333).

The spelling of 211011010221 in words is "two hundred eleven billion, eleven million, ten thousand, two hundred twenty-one".