1215226054711 has 4 divisors (see below), whose sum is σ = 1244865714624. Its totient is φ = 1185586394800.

The previous prime is 1215226054657. The next prime is 1215226054751. The reversal of 1215226054711 is 1174506225121.

It is a happy number.

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-1215226054711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215226054751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14819829895 + ... + 14819829976.

It is an arithmetic number, because the mean of its divisors is an integer number (311216428656).

Almost surely, 2^{1215226054711} is an apocalyptic number.

1215226054711 is a deficient number, since it is larger than the sum of its proper divisors (29639659913).

1215226054711 is an equidigital number, since it uses as much as digits as its factorization.

1215226054711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29639659912.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 1215226054711 in words is "one trillion, two hundred fifteen billion, two hundred twenty-six million, fifty-four thousand, seven hundred eleven".