2001501212340 has 192 divisors, whose sum is σ = 6588484116480. Its totient is φ = 444459402240.

The previous prime is 2001501212329. The next prime is 2001501212419. The reversal of 2001501212340 is 432121051002.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 3872419 + ... + 4358741.

It is an arithmetic number, because the mean of its divisors is an integer number (34315021440).

Almost surely, 2^{2001501212340} is an apocalyptic number.

2001501212340 is a gapful number since it is divisible by the number (20) 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 2001501212340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3294242058240).

2001501212340 is an abundant number, since it is smaller than the sum of its proper divisors (4586982904140).

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

2001501212340 is a wasteful number, since it uses less digits than its factorization.

2001501212340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486622 (or 486620 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 2001501212340 its reverse (432121051002), we get a palindrome (2433622263342).

The spelling of 2001501212340 in words is "two trillion, one billion, five hundred one million, two hundred twelve thousand, three hundred forty".