1213203223200 has 144 divisors (see below), whose sum is σ = 3985206492960. Its totient is φ = 320552709120.

The previous prime is 1213203223189. The next prime is 1213203223207. The reversal of 1213203223200 is 23223023121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1213203223207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2057214 + ... + 2580413.

It is an arithmetic number, because the mean of its divisors is an integer number (27675045090).

Almost surely, 2^{1213203223200} is an apocalyptic number.

1213203223200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213203223200 is an abundant number, since it is smaller than the sum of its proper divisors (2772003269760).

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

1213203223200 is a wasteful number, since it uses less digits than its factorization.

1213203223200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637759 (or 4637746 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1213203223200 its reverse (23223023121), we get a palindrome (1236426246321).

The spelling of 1213203223200 in words is "one trillion, two hundred thirteen billion, two hundred three million, two hundred twenty-three thousand, two hundred".