21022112021147 has 2 divisors, whose sum is σ = 21022112021148. Its totient is φ = 21022112021146.

The previous prime is 21022112021117. The next prime is 21022112021161. The reversal of 21022112021147 is 74112021122012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21022112021147 - 2⁸ = 21022112020891 is a prime.

It is not a weakly prime, because it can be changed into another prime (21022112021117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511056010573 + 10511056010574.

It is an arithmetic number, because the mean of its divisors is an integer number (10511056010574).

Almost surely, 2^{21022112021147} is an apocalyptic number.

21022112021147 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022112021147 is an equidigital number, since it uses as much as digits as its factorization.

21022112021147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 21022112021147 its reverse (74112021122012), we get a palindrome (95134133143159).

The spelling of 21022112021147 in words is "twenty-one trillion, twenty-two billion, one hundred twelve million, twenty-one thousand, one hundred forty-seven".