1233521213052 has 384 divisors, whose sum is σ = 3316502568960. Its totient is φ = 354496020480.

The previous prime is 1233521213051. The next prime is 1233521213059. The reversal of 1233521213052 is 2503121253321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233521213051) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4799693308 + ... + 4799693564.

It is an arithmetic number, because the mean of its divisors is an integer number (8636725440).

Almost surely, 2^{1233521213052} is an apocalyptic number.

1233521213052 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 1233521213052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658251284480).

1233521213052 is an abundant number, since it is smaller than the sum of its proper divisors (2082981355908).

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

1233521213052 is a wasteful number, since it uses less digits than its factorization.

1233521213052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 1233521213052 its reverse (2503121253321), we get a palindrome (3736642466373).

The spelling of 1233521213052 in words is "one trillion, two hundred thirty-three billion, five hundred twenty-one million, two hundred thirteen thousand, fifty-two".