2000001221197 has 24 divisors (see below), whose sum is σ = 2374696206720. Its totient is φ = 1679011830720.

The previous prime is 2000001221171. The next prime is 2000001221221. The reversal of 2000001221197 is 7911221000002.

It is not a de Polignac number, because 2000001221197 - 2⁷ = 2000001221069 is a prime.

It is a super-2 number, since 2×2000001221197² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000007221197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492928 + ... + 2059849.

It is an arithmetic number, because the mean of its divisors is an integer number (98945675280).

Almost surely, 2^{2000001221197} is an apocalyptic number.

It is an amenable number.

2000001221197 is a deficient number, since it is larger than the sum of its proper divisors (374694985523).

2000001221197 is a wasteful number, since it uses less digits than its factorization.

2000001221197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553121 (or 2553114 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 2000001221197 its reverse (7911221000002), we get a palindrome (9911222221199).

The spelling of 2000001221197 in words is "two trillion, one million, two hundred twenty-one thousand, one hundred ninety-seven".