2001230220312 has 96 divisors (see below), whose sum is σ = 5509807037280. Its totient is φ = 656027182080.

The previous prime is 2001230220263. The next prime is 2001230220337. The reversal of 2001230220312 is 2130220321002.

2001230220312 is a `hidden beast` number, since 20 + 0 + 12 + 302 + 20 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27444333 + ... + 27517155.

It is an arithmetic number, because the mean of its divisors is an integer number (57393823305).

Almost surely, 2^{2001230220312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001230220312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2754903518640).

2001230220312 is an abundant number, since it is smaller than the sum of its proper divisors (3508576816968).

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

2001230220312 is a wasteful number, since it uses less digits than its factorization.

2001230220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79153 (or 79146 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2001230220312 its reverse (2130220321002), we get a palindrome (4131450541314).

The spelling of 2001230220312 in words is "two trillion, one billion, two hundred thirty million, two hundred twenty thousand, three hundred twelve".