1211064255 has 48 divisors (see below), whose sum is σ = 2153607456. Its totient is φ = 629233920.

The previous prime is 1211064247. The next prime is 1211064263. The reversal of 1211064255 is 5524601121.

1211064255 is a `hidden beast` number, since 1 + 2 + 1 + 10 + 642 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1211064247) and next prime (1211064263).

It is not a de Polignac number, because 1211064255 - 2³ = 1211064247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1185645 + ... + 1186665.

It is an arithmetic number, because the mean of its divisors is an integer number (44866822).

Almost surely, 2^1211064255 is an apocalyptic number.

1211064255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1211064255 is a deficient number, since it is larger than the sum of its proper divisors (942543201).

1211064255 is a wasteful number, since it uses less digits than its factorization.

1211064255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1211064255 is about 34800.3484896344. The cubic root of 1211064255 is about 1065.9145618850.

Adding to 1211064255 its reverse (5524601121), we get a palindrome (6735665376).

The spelling of 1211064255 in words is "one billion, two hundred eleven million, sixty-four thousand, two hundred fifty-five".