2021121031343 has 8 divisors (see below), whose sum is σ = 2147323370880. Its totient is φ = 1898685925920.

The previous prime is 2021121031339. The next prime is 2021121031403. The reversal of 2021121031343 is 3431301211202.

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

It is not a de Polignac number, because 2021121031343 - 2² = 2021121031339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021121031333) 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, 941807423 + ... + 941809568.

It is an arithmetic number, because the mean of its divisors is an integer number (268415421360).

Almost surely, 2^{2021121031343} is an apocalyptic number.

2021121031343 is a deficient number, since it is larger than the sum of its proper divisors (126202339537).

2021121031343 is a wasteful number, since it uses less digits than its factorization.

2021121031343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883617057.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2021121031343 its reverse (3431301211202), we get a palindrome (5452422242545).

The spelling of 2021121031343 in words is "two trillion, twenty-one billion, one hundred twenty-one million, thirty-one thousand, three hundred forty-three".