1216900503000 has 1536 divisors, whose sum is σ = 5307132579840. Its totient is φ = 253957939200.

The previous prime is 1216900502999. The next prime is 1216900503053. The reversal of 1216900503000 is 3050096121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2498768757 + ... + 2498769243.

It is an arithmetic number, because the mean of its divisors is an integer number (3455164440).

Almost surely, 2^{1216900503000} is an apocalyptic number.

1216900503000 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 1216900503000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2653566289920).

1216900503000 is an abundant number, since it is smaller than the sum of its proper divisors (4090232076840).

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

1216900503000 is a wasteful number, since it uses less digits than its factorization.

1216900503000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

Adding to 1216900503000 its reverse (3050096121), we get a palindrome (1219950599121).

The spelling of 1216900503000 in words is "one trillion, two hundred sixteen billion, nine hundred million, five hundred three thousand".