1213524012011 has 4 divisors (see below), whose sum is σ = 1221560595024. Its totient is φ = 1205487429000.

The previous prime is 1213524011983. The next prime is 1213524012013. The reversal of 1213524012011 is 1102104253121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213524012011 - 2¹⁴ = 1213523995627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213524012013) 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, 4018291280 + ... + 4018291581.

It is an arithmetic number, because the mean of its divisors is an integer number (305390148756).

Almost surely, 2^{1213524012011} is an apocalyptic number.

1213524012011 is a deficient number, since it is larger than the sum of its proper divisors (8036583013).

1213524012011 is an equidigital number, since it uses as much as digits as its factorization.

1213524012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8036583012.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 1213524012011 its reverse (1102104253121), we get a palindrome (2315628265132).

The spelling of 1213524012011 in words is "one trillion, two hundred thirteen billion, five hundred twenty-four million, twelve thousand, eleven".