2001221201202 has 32 divisors (see below), whose sum is σ = 4020084768960. Its totient is φ = 664134001920.

The previous prime is 2001221201197. The next prime is 2001221201257. The reversal of 2001221201202 is 2021021221002.

It is a super-2 number, since 2×2001221201202² (a number of 25 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 12728949 + ... + 12885207.

It is an arithmetic number, because the mean of its divisors is an integer number (125627649030).

Almost surely, 2^{2001221201202} is an apocalyptic number.

2001221201202 is an abundant number, since it is smaller than the sum of its proper divisors (2018863567758).

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

2001221201202 is a wasteful number, since it uses less digits than its factorization.

2001221201202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165658.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2001221201202 its reverse (2021021221002), we get a palindrome (4022242422204).

The spelling of 2001221201202 in words is "two trillion, one billion, two hundred twenty-one million, two hundred one thousand, two hundred two".