2021043201221 has 8 divisors (see below), whose sum is σ = 2231337949344. Its totient is φ = 1815175711120.

The previous prime is 2021043201193. The next prime is 2021043201223. The reversal of 2021043201221 is 1221023401202.

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 2021043201221 - 2⁶ = 2021043201157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021043201193 and 2021043201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021043201223) 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, 1106813546 + ... + 1106815371.

It is an arithmetic number, because the mean of its divisors is an integer number (278917243668).

Almost surely, 2^{2021043201221} is an apocalyptic number.

It is an amenable number.

2021043201221 is a deficient number, since it is larger than the sum of its proper divisors (210294748123).

2021043201221 is a wasteful number, since it uses less digits than its factorization.

2021043201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213629011.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2021043201221 its reverse (1221023401202), we get a palindrome (3242066602423).

The spelling of 2021043201221 in words is "two trillion, twenty-one billion, forty-three million, two hundred one thousand, two hundred twenty-one".