1213452201220 has 24 divisors (see below), whose sum is σ = 2912285283264. Its totient is φ = 416040754656.

The previous prime is 1213452201217. The next prime is 1213452201259. The reversal of 1213452201220 is 221022543121.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4333757722 + ... + 4333758001.

It is an arithmetic number, because the mean of its divisors is an integer number (121345220136).

Almost surely, 2^{1213452201220} is an apocalyptic number.

1213452201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213452201220 is an abundant number, since it is smaller than the sum of its proper divisors (1698833082044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213452201220 is a wasteful number, since it uses less digits than its factorization.

1213452201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8667515739 (or 8667515737 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 1213452201220 its reverse (221022543121), we get a palindrome (1434474744341).

The spelling of 1213452201220 in words is "one trillion, two hundred thirteen billion, four hundred fifty-two million, two hundred one thousand, two hundred twenty".