211021000121027 has 2 divisors, whose sum is σ = 211021000121028. Its totient is φ = 211021000121026.

The previous prime is 211021000121021. The next prime is 211021000121111. The reversal of 211021000121027 is 720121000120112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211021000121027 - 2²² = 211020995926723 is a prime.

It is not a weakly prime, because it can be changed into another prime (211021000121021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510500060513 + 105510500060514.

It is an arithmetic number, because the mean of its divisors is an integer number (105510500060514).

Almost surely, 2^{211021000121027} is an apocalyptic number.

211021000121027 is a deficient number, since it is larger than the sum of its proper divisors (1).

211021000121027 is an equidigital number, since it uses as much as digits as its factorization.

211021000121027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 211021000121027 its reverse (720121000120112), we get a palindrome (931142000241139).

The spelling of 211021000121027 in words is "two hundred eleven trillion, twenty-one billion, one hundred twenty-one thousand, twenty-seven".