1011215255 has 16 divisors (see below), whose sum is σ = 1235260800. Its totient is φ = 794510112.

The previous prime is 1011215237. The next prime is 1011215273. The reversal of 1011215255 is 5525121101.

It is an interprime number because it is at equal distance from previous prime (1011215237) and next prime (1011215273).

It is a cyclic number.

It is not a de Polignac number, because 1011215255 - 2¹⁴ = 1011198871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011215255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111896 + ... + 120594.

It is an arithmetic number, because the mean of its divisors is an integer number (77203800).

Almost surely, 2^1011215255 is an apocalyptic number.

1011215255 is a deficient number, since it is larger than the sum of its proper divisors (224045545).

1011215255 is an equidigital number, since it uses as much as digits as its factorization.

1011215255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1011215255 is about 31799.6109252928. The cubic root of 1011215255 is about 1003.7245289947.

Adding to 1011215255 its reverse (5525121101), we get a palindrome (6536336356).

The spelling of 1011215255 in words is "one billion, eleven million, two hundred fifteen thousand, two hundred fifty-five".