211100021010221 has 8 divisors (see below), whose sum is σ = 241335420921024. Its totient is φ = 180884184612480.

The previous prime is 211100021010149. The next prime is 211100021010227. The reversal of 211100021010221 is 122010120001112.

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 211100021010221 - 2¹⁸ = 211100020748077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211100021010196 and 211100021010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100021010227) 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, 4890855140 + ... + 4890898301.

It is an arithmetic number, because the mean of its divisors is an integer number (30166927615128).

Almost surely, 2^{211100021010221} is an apocalyptic number.

It is an amenable number.

211100021010221 is a deficient number, since it is larger than the sum of its proper divisors (30235399910803).

211100021010221 is an equidigital number, since it uses as much as digits as its factorization.

211100021010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9781756531.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211100021010221 its reverse (122010120001112), we get a palindrome (333110141011333).

The spelling of 211100021010221 in words is "two hundred eleven trillion, one hundred billion, twenty-one million, ten thousand, two hundred twenty-one".