1201213444340 has 144 divisors (see below), whose sum is σ = 3194334557568. Its totient is φ = 371322911232.

The previous prime is 1201213444309. The next prime is 1201213444423. The reversal of 1201213444340 is 434443121021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 427034 + ... + 1607726.

It is an arithmetic number, because the mean of its divisors is an integer number (22182878872).

Almost surely, 2^{1201213444340} is an apocalyptic number.

1201213444340 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 1201213444340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597167278784).

1201213444340 is an abundant number, since it is smaller than the sum of its proper divisors (1993121113228).

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

1201213444340 is a wasteful number, since it uses less digits than its factorization.

1201213444340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180778 (or 1180763 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1201213444340 its reverse (434443121021), we get a palindrome (1635656565361).

The spelling of 1201213444340 in words is "one trillion, two hundred one billion, two hundred thirteen million, four hundred forty-four thousand, three hundred forty".