2021121100343 has 2 divisors, whose sum is σ = 2021121100344. Its totient is φ = 2021121100342.

The previous prime is 2021121100337. The next prime is 2021121100379. The reversal of 2021121100343 is 3430011211202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021121100343 - 2²⁰ = 2021120051767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021121106343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010560550171 + 1010560550172.

It is an arithmetic number, because the mean of its divisors is an integer number (1010560550172).

Almost surely, 2^{2021121100343} is an apocalyptic number.

2021121100343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021121100343 is an equidigital number, since it uses as much as digits as its factorization.

2021121100343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2021121100343 its reverse (3430011211202), we get a palindrome (5451132311545).

The spelling of 2021121100343 in words is "two trillion, twenty-one billion, one hundred twenty-one million, one hundred thousand, three hundred forty-three".