1223886827520 has 520 divisors, whose sum is σ = 5014133624544. Its totient is φ = 279742906368.

The previous prime is 1223886827519. The next prime is 1223886827561. The reversal of 1223886827520 is 257286883221.

1223886827520 is a `hidden beast` number, since 1 + 2 + 2 + 38 + 8 + 6 + 82 + 7 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 11559462 + ... + 11664858.

Almost surely, 2^{1223886827520} is an apocalyptic number.

1223886827520 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 1223886827520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2507066812272).

1223886827520 is an abundant number, since it is smaller than the sum of its proper divisors (3790246797024).

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

1223886827520 is an equidigital number, since it uses as much as digits as its factorization.

1223886827520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105445 (or 105414 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 1223886827520 in words is "one trillion, two hundred twenty-three billion, eight hundred eighty-six million, eight hundred twenty-seven thousand, five hundred twenty".