2001213201500 has 48 divisors (see below), whose sum is σ = 4374005353536. Its totient is φ = 799870680000.

The previous prime is 2001213201487. The next prime is 2001213201509. The reversal of 2001213201500 is 51023121002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001213201509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884351 + ... + 2187350.

It is an arithmetic number, because the mean of its divisors is an integer number (91125111532).

Almost surely, 2^{2001213201500} is an apocalyptic number.

2001213201500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001213201500 is an abundant number, since it is smaller than the sum of its proper divisors (2372792152036).

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

2001213201500 is a wasteful number, since it uses less digits than its factorization.

2001213201500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073023 (or 3073011 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 2001213201500 its reverse (51023121002), we get a palindrome (2052236322502).

The spelling of 2001213201500 in words is "two trillion, one billion, two hundred thirteen million, two hundred one thousand, five hundred".