2021000212021 has 8 divisors (see below), whose sum is σ = 2445580088640. Its totient is φ = 1630386725568.

The previous prime is 2021000212019. The next prime is 2021000212057. The reversal of 2021000212021 is 1202120001202.

It is a happy number.

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

It is not a de Polignac number, because 2021000212021 - 2¹ = 2021000212019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021000211992 and 2021000212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021000012021) 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, 8491597411 + ... + 8491597648.

It is an arithmetic number, because the mean of its divisors is an integer number (305697511080).

Almost surely, 2^{2021000212021} is an apocalyptic number.

It is an amenable number.

2021000212021 is a deficient number, since it is larger than the sum of its proper divisors (424579876619).

2021000212021 is a wasteful number, since it uses less digits than its factorization.

2021000212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16983195083.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2021000212021 its reverse (1202120001202), we get a palindrome (3223120213223).

The spelling of 2021000212021 in words is "two trillion, twenty-one billion, two hundred twelve thousand, twenty-one".