211021120000221 has 8 divisors (see below), whose sum is σ = 281708424894624. Its totient is φ = 140507280886320.

The previous prime is 211021120000217. The next prime is 211021120000231. The reversal of 211021120000221 is 122000021120112.

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

It is not a de Polignac number, because 211021120000221 - 2² = 211021120000217 is a prime.

It is a super-2 number, since 2×211021120000221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211021120000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021120000231) 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, 43366442286 + ... + 43366447151.

It is an arithmetic number, because the mean of its divisors is an integer number (35213553111828).

Almost surely, 2^{211021120000221} is an apocalyptic number.

It is an amenable number.

211021120000221 is a deficient number, since it is larger than the sum of its proper divisors (70687304894403).

211021120000221 is an equidigital number, since it uses as much as digits as its factorization.

211021120000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86732890251.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211021120000221 its reverse (122000021120112), we get a palindrome (333021141120333).

The spelling of 211021120000221 in words is "two hundred eleven trillion, twenty-one billion, one hundred twenty million, two hundred twenty-one", and thus it is an aban number.