1211064256 has 28 divisors (see below), whose sum is σ = 2529692680. Its totient is φ = 573661440.

The previous prime is 1211064247. The next prime is 1211064263. The reversal of 1211064256 is 6524601121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496755 + ... + 499186.

Almost surely, 2^1211064256 is an apocalyptic number.

1211064256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1211064256 is an abundant number, since it is smaller than the sum of its proper divisors (1318628424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211064256 is an equidigital number, since it uses as much as digits as its factorization.

1211064256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995972 (or 995962 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1211064256 is about 34800.3485040021. The cubic root of 1211064256 is about 1065.9145621784.

Adding to 1211064256 its reverse (6524601121), we get a palindrome (7735665377).

The spelling of 1211064256 in words is "one billion, two hundred eleven million, sixty-four thousand, two hundred fifty-six".