1212231224240 has 80 divisors (see below), whose sum is σ = 2909623581696. Its totient is φ = 469207468800.

The previous prime is 1212231224189. The next prime is 1212231224263. The reversal of 1212231224240 is 424221322121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44733095 + ... + 44760185.

Almost surely, 2^{1212231224240} is an apocalyptic number.

1212231224240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212231224240 is an abundant number, since it is smaller than the sum of its proper divisors (1697392357456).

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

1212231224240 is a wasteful number, since it uses less digits than its factorization.

1212231224240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45178 (or 45172 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 1212231224240 its reverse (424221322121), we get a palindrome (1636452546361).

The spelling of 1212231224240 in words is "one trillion, two hundred twelve billion, two hundred thirty-one million, two hundred twenty-four thousand, two hundred forty".