1211550304332 has 12 divisors (see below), whose sum is σ = 2826950710136. Its totient is φ = 403850101440.

The previous prime is 1211550304297. The next prime is 1211550304351. The reversal of 1211550304332 is 2334030551121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1211550304332.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50481262669 + ... + 50481262692.

Almost surely, 2^{1211550304332} is an apocalyptic number.

1211550304332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211550304332 is an abundant number, since it is smaller than the sum of its proper divisors (1615400405804).

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

1211550304332 is a wasteful number, since it uses less digits than its factorization.

1211550304332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100962525368 (or 100962525366 counting only the distinct ones).

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

Adding to 1211550304332 its reverse (2334030551121), we get a palindrome (3545580855453).

The spelling of 1211550304332 in words is "one trillion, two hundred eleven billion, five hundred fifty million, three hundred four thousand, three hundred thirty-two".