1223998249452 has 144 divisors (see below), whose sum is σ = 3248797490400. Its totient is φ = 357973862400.

The previous prime is 1223998249451. The next prime is 1223998249483. The reversal of 1223998249452 is 2549428993221.

It is not an unprimeable number, because it can be changed into a prime (1223998249451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149100324 + ... + 149108532.

Almost surely, 2^{1223998249452} is an apocalyptic number.

1223998249452 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 1223998249452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1624398745200).

1223998249452 is an abundant number, since it is smaller than the sum of its proper divisors (2024799240948).

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

1223998249452 is a wasteful number, since it uses less digits than its factorization.

1223998249452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11808 (or 11795 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 60.

The spelling of 1223998249452 in words is "one trillion, two hundred twenty-three billion, nine hundred ninety-eight million, two hundred forty-nine thousand, four hundred fifty-two".