12211121021147 has 2 divisors, whose sum is σ = 12211121021148. Its totient is φ = 12211121021146.

The previous prime is 12211121021119. The next prime is 12211121021167. The reversal of 12211121021147 is 74112012111221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12211121021147 - 2¹⁴ = 12211121004763 is a prime.

It is a super-2 number, since 2×12211121021147² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12211121021117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105560510573 + 6105560510574.

It is an arithmetic number, because the mean of its divisors is an integer number (6105560510574).

Almost surely, 2^{12211121021147} is an apocalyptic number.

12211121021147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211121021147 is an equidigital number, since it uses as much as digits as its factorization.

12211121021147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 26.

Adding to 12211121021147 its reverse (74112012111221), we get a palindrome (86323133132368).

The spelling of 12211121021147 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, twenty-one thousand, one hundred forty-seven".