1001211115 has 8 divisors (see below), whose sum is σ = 1218375648. Its totient is φ = 789687360.

The previous prime is 1001211089. The next prime is 1001211121. The reversal of 1001211115 is 5111121001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001211115 - 2⁹ = 1001210603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001211095 and 1001211104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1409802 + ... + 1410511.

It is an arithmetic number, because the mean of its divisors is an integer number (152296956).

Almost surely, 2^1001211115 is an apocalyptic number.

1001211115 is a deficient number, since it is larger than the sum of its proper divisors (217164533).

1001211115 is an equidigital number, since it uses as much as digits as its factorization.

1001211115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820389.

The product of its (nonzero) digits is 10, while the sum is 13.

The square root of 1001211115 is about 31641.9202166999. The cubic root of 1001211115 is about 1000.4035421318.

Adding to 1001211115 its reverse (5111121001), we get a palindrome (6112332116).

The spelling of 1001211115 in words is "one billion, one million, two hundred eleven thousand, one hundred fifteen".