1211101315 has 16 divisors (see below), whose sum is σ = 1475962560. Its totient is φ = 953827840.

The previous prime is 1211101261. The next prime is 1211101327. The reversal of 1211101315 is 5131011121.

It is a happy number.

It is not a de Polignac number, because 1211101315 - 2⁷ = 1211101187 is a prime.

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, 285087 + ... + 289303.

It is an arithmetic number, because the mean of its divisors is an integer number (92247660).

Almost surely, 2^1211101315 is an apocalyptic number.

1211101315 is a deficient number, since it is larger than the sum of its proper divisors (264861245).

1211101315 is an equidigital number, since it uses as much as digits as its factorization.

1211101315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 1211101315 is about 34800.8809514932. The cubic root of 1211101315 is about 1065.9254345233.

Adding to 1211101315 its reverse (5131011121), we get a palindrome (6342112436).

The spelling of 1211101315 in words is "one billion, two hundred eleven million, one hundred one thousand, three hundred fifteen".