2000121201021 has 4 divisors (see below), whose sum is σ = 2666828268032. Its totient is φ = 1333414134012.

The previous prime is 2000121200989. The next prime is 2000121201131. The reversal of 2000121201021 is 1201021210002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2000121201021 - 2⁵ = 2000121200989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000121200988 and 2000121201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000121208021) by changing a digit.

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, 333353533501 + ... + 333353533506.

It is an arithmetic number, because the mean of its divisors is an integer number (666707067008).

Almost surely, 2^{2000121201021} is an apocalyptic number.

It is an amenable number.

2000121201021 is a deficient number, since it is larger than the sum of its proper divisors (666707067011).

2000121201021 is an equidigital number, since it uses as much as digits as its factorization.

2000121201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666707067010.

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

Adding to 2000121201021 its reverse (1201021210002), we get a palindrome (3201142411023).

The spelling of 2000121201021 in words is "two trillion, one hundred twenty-one million, two hundred one thousand, twenty-one".