2021221434343 has 8 divisors (see below), whose sum is σ = 2064274895808. Its totient is φ = 1978170004224.

The previous prime is 2021221434293. The next prime is 2021221434413. The reversal of 2021221434343 is 3434341221202.

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 2021221434343 - 2¹⁷ = 2021221303271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021221434643) 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, 1595155 + ... + 2566507.

It is an arithmetic number, because the mean of its divisors is an integer number (258034361976).

Almost surely, 2^{2021221434343} is an apocalyptic number.

2021221434343 is a deficient number, since it is larger than the sum of its proper divisors (43053461465).

2021221434343 is an equidigital number, since it uses as much as digits as its factorization.

2021221434343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015673.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 2021221434343 its reverse (3434341221202), we get a palindrome (5455562655545).

The spelling of 2021221434343 in words is "two trillion, twenty-one billion, two hundred twenty-one million, four hundred thirty-four thousand, three hundred forty-three".