11951011 has 2 divisors, whose sum is σ = 11951012. Its totient is φ = 11951010.

The previous prime is 11950979. The next prime is 11951047. The reversal of 11951011 is 11015911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11951011 - 2⁵ = 11950979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11951011.

It is not a weakly prime, because it can be changed into another prime (11951411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5975505 + 5975506.

It is an arithmetic number, because the mean of its divisors is an integer number (5975506).

Almost surely, 2^11951011 is an apocalyptic number.

11951011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11951011 is an equidigital number, since it uses as much as digits as its factorization.

11951011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 19.

The square root of 11951011 is about 3457.0234306409. The cubic root of 11951011 is about 228.6308768919.

Adding to 11951011 its reverse (11015911), we get a palindrome (22966922).

The spelling of 11951011 in words is "eleven million, nine hundred fifty-one thousand, eleven".