2001200221012 has 12 divisors (see below), whose sum is σ = 3514052949876. Its totient is φ = 997185092480.

The previous prime is 2001200220973. The next prime is 2001200221043. The reversal of 2001200221012 is 2101220021002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1169828275396 + 831371945616 = 1081586^2 + 911796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2001200220983 and 2001200221001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853753189 + ... + 853755532.

It is an arithmetic number, because the mean of its divisors is an integer number (292837745823).

Almost surely, 2^{2001200221012} is an apocalyptic number.

It is an amenable number.

2001200221012 is a deficient number, since it is larger than the sum of its proper divisors (1512852728864).

2001200221012 is a wasteful number, since it uses less digits than its factorization.

2001200221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707509018 (or 1707509016 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001200221012 its reverse (2101220021002), we get a palindrome (4102420242014).

The spelling of 2001200221012 in words is "two trillion, one billion, two hundred million, two hundred twenty-one thousand, twelve".