2000121210021 has 16 divisors (see below), whose sum is σ = 2914060105728. Its totient is φ = 1210197634800.

The previous prime is 2000121209927. The next prime is 2000121210029. The reversal of 2000121210021 is 1200121210002.

It is not a de Polignac number, because 2000121210021 - 2⁹ = 2000121209509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2000121209979 and 2000121210006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000121210029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49905615 + ... + 49945676.

It is an arithmetic number, because the mean of its divisors is an integer number (182128756608).

Almost surely, 2^{2000121210021} is an apocalyptic number.

It is an amenable number.

2000121210021 is a deficient number, since it is larger than the sum of its proper divisors (913938895707).

2000121210021 is a wasteful number, since it uses less digits than its factorization.

2000121210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99851912.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2000121210021 its reverse (1200121210002), we get a palindrome (3200242420023).

The spelling of 2000121210021 in words is "two trillion, one hundred twenty-one million, two hundred ten thousand, twenty-one".