1203521445216 has 144 divisors (see below), whose sum is σ = 3434337597600. Its totient is φ = 399789471744.

The previous prime is 1203521445143. The next prime is 1203521445233. The reversal of 1203521445216 is 6125441253021.

1203521445216 is a `hidden beast` number, since 1 + 203 + 5 + 2 + 1 + 445 + 2 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209779500 + ... + 209785236.

It is an arithmetic number, because the mean of its divisors is an integer number (23849566650).

Almost surely, 2^{1203521445216} is an apocalyptic number.

1203521445216 is a gapful number since it is divisible by the number (16) 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 1203521445216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717168798800).

1203521445216 is an abundant number, since it is smaller than the sum of its proper divisors (2230816152384).

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

1203521445216 is a wasteful number, since it uses less digits than its factorization.

1203521445216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8141 (or 8130 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 1203521445216 its reverse (6125441253021), we get a palindrome (7328962698237).

The spelling of 1203521445216 in words is "one trillion, two hundred three billion, five hundred twenty-one million, four hundred forty-five thousand, two hundred sixteen".