2021421143211 has 8 divisors (see below), whose sum is σ = 2695334818704. Its totient is φ = 1347560781600.

The previous prime is 2021421143191. The next prime is 2021421143219. The reversal of 2021421143211 is 1123411241202.

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

It is not a de Polignac number, because 2021421143211 - 2¹⁴ = 2021421126827 is a prime.

It is a super-2 number, since 2×2021421143211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2021421143219) 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, 13239916 + ... + 13391721.

It is an arithmetic number, because the mean of its divisors is an integer number (336916852338).

Almost surely, 2^{2021421143211} is an apocalyptic number.

2021421143211 is a deficient number, since it is larger than the sum of its proper divisors (673913675493).

2021421143211 is a wasteful number, since it uses less digits than its factorization.

2021421143211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26656941.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 2021421143211 its reverse (1123411241202), we get a palindrome (3144832384413).

The spelling of 2021421143211 in words is "two trillion, twenty-one billion, four hundred twenty-one million, one hundred forty-three thousand, two hundred eleven".