1212533045000 has 80 divisors (see below), whose sum is σ = 2841460363500. Its totient is φ = 484928640000.

The previous prime is 1212533044991. The next prime is 1212533045011. The reversal of 1212533045000 is 5403352121.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 59568212356 + 1152964832644 = 244066^2 + 1073762^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34187276 + ... + 34222724.

Almost surely, 2^{1212533045000} is an apocalyptic number.

1212533045000 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 1212533045000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420730181750).

1212533045000 is an abundant number, since it is smaller than the sum of its proper divisors (1628927318500).

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

1212533045000 is an equidigital number, since it uses as much as digits as its factorization.

1212533045000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42316 (or 42297 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 1212533045000 its reverse (5403352121), we get a palindrome (1217936397121).

The spelling of 1212533045000 in words is "one trillion, two hundred twelve billion, five hundred thirty-three million, forty-five thousand".