1223208072500 has 120 divisors (see below), whose sum is σ = 2704941091776. Its totient is φ = 483799680000.

The previous prime is 1223208072451. The next prime is 1223208072563. The reversal of 1223208072500 is 52708023221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 447896135 + ... + 447898865.

Almost surely, 2^{1223208072500} is an apocalyptic number.

1223208072500 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 1223208072500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352470545888).

1223208072500 is an abundant number, since it is smaller than the sum of its proper divisors (1481733019276).

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

1223208072500 is a wasteful number, since it uses less digits than its factorization.

1223208072500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699 (or 4682 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 1223208072500 in words is "one trillion, two hundred twenty-three billion, two hundred eight million, seventy-two thousand, five hundred".