11211015011 has 4 divisors (see below), whose sum is σ = 12812588592. Its totient is φ = 9609441432.

The previous prime is 11211014963. The next prime is 11211015017. The reversal of 11211015011 is 11051011211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211015011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211015017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800786780 + ... + 800786793.

It is an arithmetic number, because the mean of its divisors is an integer number (3203147148).

Almost surely, 2^11211015011 is an apocalyptic number.

11211015011 is a deficient number, since it is larger than the sum of its proper divisors (1601573581).

11211015011 is an equidigital number, since it uses as much as digits as its factorization.

11211015011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601573580.

The product of its (nonzero) digits is 10, while the sum is 14.

Adding to 11211015011 its reverse (11051011211), we get a palindrome (22262026222).

The spelling of 11211015011 in words is "eleven billion, two hundred eleven million, fifteen thousand, eleven".