1212009057532 has 288 divisors, whose sum is σ = 2780477521920. Its totient is φ = 451953665280.

The previous prime is 1212009057503. The next prime is 1212009057557. The reversal of 1212009057532 is 2357509002121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212009057491 and 1212009057500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2530290069 + ... + 2530290547.

It is an arithmetic number, because the mean of its divisors is an integer number (9654435840).

Almost surely, 2^{1212009057532} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212009057532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1390238760960).

1212009057532 is an abundant number, since it is smaller than the sum of its proper divisors (1568468464388).

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

1212009057532 is a wasteful number, since it uses less digits than its factorization.

1212009057532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 1212009057532 in words is "one trillion, two hundred twelve billion, nine million, fifty-seven thousand, five hundred thirty-two".