1213420553198 has 32 divisors (see below), whose sum is σ = 2204326656000. Its totient is φ = 489360485664.

The previous prime is 1213420553197. The next prime is 1213420553243. The reversal of 1213420553198 is 8913550243121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213420553197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15268190 + ... + 15347457.

It is an arithmetic number, because the mean of its divisors is an integer number (68885208000).

Almost surely, 2^{1213420553198} is an apocalyptic number.

1213420553198 is a deficient number, since it is larger than the sum of its proper divisors (990906102802).

1213420553198 is a wasteful number, since it uses less digits than its factorization.

1213420553198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30615824.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 1213420553198 in words is "one trillion, two hundred thirteen billion, four hundred twenty million, five hundred fifty-three thousand, one hundred ninety-eight".