1222500815952 has 480 divisors, whose sum is σ = 3790948613760. Its totient is φ = 336321331200.

The previous prime is 1222500815891. The next prime is 1222500815989. The reversal of 1222500815952 is 2595180052221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 467136948 + ... + 467139564.

It is an arithmetic number, because the mean of its divisors is an integer number (7897809612).

Almost surely, 2^{1222500815952} is an apocalyptic number.

1222500815952 is a gapful number since it is divisible by the number (12) 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 1222500815952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1895474306880).

1222500815952 is an abundant number, since it is smaller than the sum of its proper divisors (2568447797808).

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

1222500815952 is a wasteful number, since it uses less digits than its factorization.

1222500815952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763 (or 2726 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 42.

The spelling of 1222500815952 in words is "one trillion, two hundred twenty-two billion, five hundred million, eight hundred fifteen thousand, nine hundred fifty-two".