2001211202000 has 160 divisors (see below), whose sum is σ = 5128538073984. Its totient is φ = 752666880000.

The previous prime is 2001211201999. The next prime is 2001211202009. The reversal of 2001211202000 is 2021121002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001211202009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35705999 + ... + 35762001.

Almost surely, 2^{2001211202000} is an apocalyptic number.

2001211202000 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 2001211202000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2564269036992).

2001211202000 is an abundant number, since it is smaller than the sum of its proper divisors (3127326871984).

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

2001211202000 is a wasteful number, since it uses less digits than its factorization.

2001211202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57094 (or 57078 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2001211202000 its reverse (2021121002), we get a palindrome (2003232323002).

The spelling of 2001211202000 in words is "two trillion, one billion, two hundred eleven million, two hundred two thousand".