202121022120211 has 2 divisors, whose sum is σ = 202121022120212. Its totient is φ = 202121022120210.

The previous prime is 202121022120137. The next prime is 202121022120239. The reversal of 202121022120211 is 112021220121202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202121022120211 - 2⁴⁵ = 166936650031379 is a prime.

It is not a weakly prime, because it can be changed into another prime (202121022120271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060511060105 + 101060511060106.

It is an arithmetic number, because the mean of its divisors is an integer number (101060511060106).

Almost surely, 2^{202121022120211} is an apocalyptic number.

202121022120211 is a deficient number, since it is larger than the sum of its proper divisors (1).

202121022120211 is an equidigital number, since it uses as much as digits as its factorization.

202121022120211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 202121022120211 its reverse (112021220121202), we get a palindrome (314142242241413).

The spelling of 202121022120211 in words is "two hundred two trillion, one hundred twenty-one billion, twenty-two million, one hundred twenty thousand, two hundred eleven".