11211454054991 has 2 divisors, whose sum is σ = 11211454054992. Its totient is φ = 11211454054990.

The previous prime is 11211454054979. The next prime is 11211454055027. The reversal of 11211454054991 is 19945045411211.

11211454054991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211454054991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211454059991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605727027495 + 5605727027496.

It is an arithmetic number, because the mean of its divisors is an integer number (5605727027496).

Almost surely, 2^{11211454054991} is an apocalyptic number.

11211454054991 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211454054991 is an equidigital number, since it uses as much as digits as its factorization.

11211454054991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 47.

The spelling of 11211454054991 in words is "eleven trillion, two hundred eleven billion, four hundred fifty-four million, fifty-four thousand, nine hundred ninety-one".