1211064571 has 2 divisors, whose sum is σ = 1211064572. Its totient is φ = 1211064570.

The previous prime is 1211064539. The next prime is 1211064587. The reversal of 1211064571 is 1754601121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211064571 - 2⁵ = 1211064539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211064521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605532285 + 605532286.

It is an arithmetic number, because the mean of its divisors is an integer number (605532286).

Almost surely, 2^1211064571 is an apocalyptic number.

1211064571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211064571 is an equidigital number, since it uses as much as digits as its factorization.

1211064571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1211064571 is about 34800.3530298185. The cubic root of 1211064571 is about 1065.9146545938.

Adding to 1211064571 its reverse (1754601121), we get a palindrome (2965665692).

The spelling of 1211064571 in words is "one billion, two hundred eleven million, sixty-four thousand, five hundred seventy-one".