1212331120000 has 640 divisors, whose sum is σ = 4052437804800. Its totient is φ = 348779520000.

The previous prime is 1212331119997. The next prime is 1212331120093. The reversal of 1212331120000 is 211332121.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 80072431 + ... + 80087569.

It is an arithmetic number, because the mean of its divisors is an integer number (6331934070).

Almost surely, 2^{1212331120000} is an apocalyptic number.

1212331120000 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 1212331120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2026218902400).

1212331120000 is an abundant number, since it is smaller than the sum of its proper divisors (2840106684800).

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

1212331120000 is a wasteful number, since it uses less digits than its factorization.

1212331120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15204 (or 15177 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1212331120000 its reverse (211332121), we get a palindrome (1212542452121).

It can be divided in two parts, 1212331 and 120000, that added together give a palindrome (1332331).

The spelling of 1212331120000 in words is "one trillion, two hundred twelve billion, three hundred thirty-one million, one hundred twenty thousand".