2000121002021 has 4 divisors (see below), whose sum is σ = 2000202574272. Its totient is φ = 2000039429772.

The previous prime is 2000121002003. The next prime is 2000121002027. The reversal of 2000121002021 is 1202001210002.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2000121002021 - 2²⁶ = 2000053893157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000121001993 and 2000121002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000121002027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40749335 + ... + 40798388.

It is an arithmetic number, because the mean of its divisors is an integer number (500050643568).

Almost surely, 2^{2000121002021} is an apocalyptic number.

It is an amenable number.

2000121002021 is a deficient number, since it is larger than the sum of its proper divisors (81572251).

2000121002021 is an equidigital number, since it uses as much as digits as its factorization.

2000121002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81572250.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2000121002021 its reverse (1202001210002), we get a palindrome (3202122212023).

The spelling of 2000121002021 in words is "two trillion, one hundred twenty-one million, two thousand, twenty-one".