20221021027 has 2 divisors, whose sum is σ = 20221021028. Its totient is φ = 20221021026.

The previous prime is 20221021001. The next prime is 20221021039. The reversal of 20221021027 is 72012012202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20221021027 - 2¹⁹ = 20220496739 is a prime.

It is a super-2 number, since 2×20221021027² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20221020995 and 20221021013.

It is not a weakly prime, because it can be changed into another prime (20221022027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110510513 + 10110510514.

It is an arithmetic number, because the mean of its divisors is an integer number (10110510514).

Almost surely, 2^20221021027 is an apocalyptic number.

20221021027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221021027 is an equidigital number, since it uses as much as digits as its factorization.

20221021027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

Adding to 20221021027 its reverse (72012012202), we get a palindrome (92233033229).

The spelling of 20221021027 in words is "twenty billion, two hundred twenty-one million, twenty-one thousand, twenty-seven".