211211021027 has 2 divisors, whose sum is σ = 211211021028. Its totient is φ = 211211021026.

The previous prime is 211211020991. The next prime is 211211021059. The reversal of 211211021027 is 720120112112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211211021027 - 2¹⁰ = 211211020003 is a prime.

It is a super-2 number, since 2×211211021027² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211211021927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605510513 + 105605510514.

It is an arithmetic number, because the mean of its divisors is an integer number (105605510514).

Almost surely, 2^211211021027 is an apocalyptic number.

211211021027 is a deficient number, since it is larger than the sum of its proper divisors (1).

211211021027 is an equidigital number, since it uses as much as digits as its factorization.

211211021027 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 211211021027 its reverse (720120112112), we get a palindrome (931331133139).

The spelling of 211211021027 in words is "two hundred eleven billion, two hundred eleven million, twenty-one thousand, twenty-seven".