1213505455411 has 16 divisors (see below), whose sum is σ = 1274765184000. Its totient is φ = 1152963950688.

The previous prime is 1213505455397. The next prime is 1213505455447. The reversal of 1213505455411 is 1145545053121.

It is a cyclic number.

It is not a de Polignac number, because 1213505455411 - 2¹⁹ = 1213504931123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213505455511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5260645 + ... + 5486473.

It is an arithmetic number, because the mean of its divisors is an integer number (79672824000).

Almost surely, 2^{1213505455411} is an apocalyptic number.

1213505455411 is a deficient number, since it is larger than the sum of its proper divisors (61259728589).

1213505455411 is a wasteful number, since it uses less digits than its factorization.

1213505455411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227418.

The product of its (nonzero) digits is 60000, while the sum is 37.

The spelling of 1213505455411 in words is "one trillion, two hundred thirteen billion, five hundred five million, four hundred fifty-five thousand, four hundred eleven".