1213103223200 has 432 divisors, whose sum is σ = 3469058028576. Its totient is φ = 410486630400.

The previous prime is 1213103223191. The next prime is 1213103223217. The reversal of 1213103223200 is 23223013121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 172238879 + ... + 172245921.

It is an arithmetic number, because the mean of its divisors is an integer number (8030226918).

Almost surely, 2^{1213103223200} is an apocalyptic number.

1213103223200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213103223200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1734529014288).

1213103223200 is an abundant number, since it is smaller than the sum of its proper divisors (2255954805376).

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

1213103223200 is a wasteful number, since it uses less digits than its factorization.

1213103223200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7157 (or 7121 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1213103223200 its reverse (23223013121), we get a palindrome (1236326236321).

The spelling of 1213103223200 in words is "one trillion, two hundred thirteen billion, one hundred three million, two hundred twenty-three thousand, two hundred".