1201210432440 has 64 divisors (see below), whose sum is σ = 3605207823360. Its totient is φ = 320182646400.

The previous prime is 1201210432399. The next prime is 1201210432459. The reversal of 1201210432440 is 442340121021.

It is a super-3 number, since 3×1201210432440³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1201210432440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1914036 + ... + 2462915.

It is an arithmetic number, because the mean of its divisors is an integer number (56331372240).

Almost surely, 2^{1201210432440} is an apocalyptic number.

1201210432440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201210432440 is an abundant number, since it is smaller than the sum of its proper divisors (2403997390920).

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

1201210432440 is a wasteful number, since it uses less digits than its factorization.

1201210432440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379252 (or 4379248 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1201210432440 its reverse (442340121021), we get a palindrome (1643550553461).

The spelling of 1201210432440 in words is "one trillion, two hundred one billion, two hundred ten million, four hundred thirty-two thousand, four hundred forty".