11512214533 has 2 divisors, whose sum is σ = 11512214534. Its totient is φ = 11512214532.

The previous prime is 11512214471. The next prime is 11512214543. The reversal of 11512214533 is 33541221511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9818233569 + 1693980964 = 99087^2 + 41158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11512214533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11512214543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756107266 + 5756107267.

It is an arithmetic number, because the mean of its divisors is an integer number (5756107267).

Almost surely, 2^11512214533 is an apocalyptic number.

It is an amenable number.

11512214533 is a deficient number, since it is larger than the sum of its proper divisors (1).

11512214533 is an equidigital number, since it uses as much as digits as its factorization.

11512214533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The spelling of 11512214533 in words is "eleven billion, five hundred twelve million, two hundred fourteen thousand, five hundred thirty-three".