1201342221240 has 256 divisors, whose sum is σ = 4390557696000. Its totient is φ = 256847086080.

The previous prime is 1201342221181. The next prime is 1201342221253. The reversal of 1201342221240 is 421222431021.

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 1201342221240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 784435 + ... + 1737245.

It is an arithmetic number, because the mean of its divisors is an integer number (17150616000).

Almost surely, 2^{1201342221240} is an apocalyptic number.

1201342221240 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 1201342221240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2195278848000).

1201342221240 is an abundant number, since it is smaller than the sum of its proper divisors (3189215474760).

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

1201342221240 is a wasteful number, since it uses less digits than its factorization.

1201342221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952930 (or 952926 counting only the distinct ones).

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

Adding to 1201342221240 its reverse (421222431021), we get a palindrome (1622564652261).

The spelling of 1201342221240 in words is "one trillion, two hundred one billion, three hundred forty-two million, two hundred twenty-one thousand, two hundred forty".