2000122121221 has 8 divisors (see below), whose sum is σ = 2298623987520. Its totient is φ = 1704812788608.

The previous prime is 2000122121203. The next prime is 2000122121233. The reversal of 2000122121221 is 1221212210002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2000122121221 - 2⁵ = 2000122121189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2000122121195 and 2000122121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000122121201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798132076 + ... + 798134581.

It is an arithmetic number, because the mean of its divisors is an integer number (287327998440).

Almost surely, 2^{2000122121221} is an apocalyptic number.

It is an amenable number.

2000122121221 is a deficient number, since it is larger than the sum of its proper divisors (298501866299).

2000122121221 is a wasteful number, since it uses less digits than its factorization.

2000122121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596266843.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2000122121221 its reverse (1221212210002), we get a palindrome (3221334331223).

The spelling of 2000122121221 in words is "two trillion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".