1223851813932 has 192 divisors, whose sum is σ = 3277750468608. Its totient is φ = 352033248000.

The previous prime is 1223851813889. The next prime is 1223851813957. The reversal of 1223851813932 is 2393181583221.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57224113 + ... + 57245495.

It is an arithmetic number, because the mean of its divisors is an integer number (17071617024).

Almost surely, 2^{1223851813932} is an apocalyptic number.

1223851813932 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 1223851813932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638875234304).

1223851813932 is an abundant number, since it is smaller than the sum of its proper divisors (2053898654676).

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

1223851813932 is a wasteful number, since it uses less digits than its factorization.

1223851813932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21700 (or 21698 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The spelling of 1223851813932 in words is "one trillion, two hundred twenty-three billion, eight hundred fifty-one million, eight hundred thirteen thousand, nine hundred thirty-two".