2021123301121 has 2 divisors, whose sum is σ = 2021123301122. Its totient is φ = 2021123301120.

The previous prime is 2021123301107. The next prime is 2021123301143. The reversal of 2021123301121 is 1211033211202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1845508665025 + 175614636096 = 1358495^2 + 419064^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021123301121 - 2²³ = 2021114912513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021123307121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010561650560 + 1010561650561.

It is an arithmetic number, because the mean of its divisors is an integer number (1010561650561).

Almost surely, 2^{2021123301121} is an apocalyptic number.

It is an amenable number.

2021123301121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021123301121 is an equidigital number, since it uses as much as digits as its factorization.

2021123301121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2021123301121 its reverse (1211033211202), we get a palindrome (3232156512323).

The spelling of 2021123301121 in words is "two trillion, twenty-one billion, one hundred twenty-three million, three hundred one thousand, one hundred twenty-one".