211120010020221 has 4 divisors (see below), whose sum is σ = 281493346693632. Its totient is φ = 140746673346812.

The previous prime is 211120010020201. The next prime is 211120010020247. The reversal of 211120010020221 is 122020010021112.

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 211120010020221 - 2²⁹ = 211119473149309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211120010020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120010020201) 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, 35186668336701 + ... + 35186668336706.

It is an arithmetic number, because the mean of its divisors is an integer number (70373336673408).

Almost surely, 2^{211120010020221} is an apocalyptic number.

It is an amenable number.

211120010020221 is a deficient number, since it is larger than the sum of its proper divisors (70373336673411).

211120010020221 is an equidigital number, since it uses as much as digits as its factorization.

211120010020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70373336673410.

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

Adding to 211120010020221 its reverse (122020010021112), we get a palindrome (333140020041333).

The spelling of 211120010020221 in words is "two hundred eleven trillion, one hundred twenty billion, ten million, twenty thousand, two hundred twenty-one".