211120211212021 has 2 divisors, whose sum is σ = 211120211212022. Its totient is φ = 211120211212020.

The previous prime is 211120211211961. The next prime is 211120211212073. The reversal of 211120211212021 is 120212112021112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204058510859025 + 7061700352996 = 14284905^2 + 2657386^2 .

It is a cyclic number.

It is not a de Polignac number, because 211120211212021 - 2³¹ = 211118063728373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211120211212021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211120211212121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560105606010 + 105560105606011.

It is an arithmetic number, because the mean of its divisors is an integer number (105560105606011).

Almost surely, 2^{211120211212021} is an apocalyptic number.

It is an amenable number.

211120211212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

211120211212021 is an equidigital number, since it uses as much as digits as its factorization.

211120211212021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211120211212021 its reverse (120212112021112), we get a palindrome (331332323233133).

The spelling of 211120211212021 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred eleven million, two hundred twelve thousand, twenty-one".