1213450445223 has 12 divisors (see below), whose sum is σ = 1800133694008. Its totient is φ = 787102991280.

The previous prime is 1213450445209. The next prime is 1213450445237. The reversal of 1213450445223 is 3225440543121.

It is a happy number.

1213450445223 is a `hidden beast` number, since 1 + 2 + 134 + 50 + 4 + 452 + 23 = 666.

It is an interprime number because it is at equal distance from previous prime (1213450445209) and next prime (1213450445237).

It is not a de Polignac number, because 1213450445223 - 2³⁶ = 1144730968487 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 (1213450445203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1821997333 + ... + 1821997998.

Almost surely, 2^{1213450445223} is an apocalyptic number.

1213450445223 is a deficient number, since it is larger than the sum of its proper divisors (586683248785).

1213450445223 is a wasteful number, since it uses less digits than its factorization.

1213450445223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643995374 (or 3643995371 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 1213450445223 its reverse (3225440543121), we get a palindrome (4438890988344).

The spelling of 1213450445223 in words is "one trillion, two hundred thirteen billion, four hundred fifty million, four hundred forty-five thousand, two hundred twenty-three".