2021123352311 has 4 divisors (see below), whose sum is σ = 2309855259792. Its totient is φ = 1732391444832.

The previous prime is 2021123352307. The next prime is 2021123352323. The reversal of 2021123352311 is 1132533211202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021123352311 - 2² = 2021123352307 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 (2021123352511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144365953730 + ... + 144365953743.

It is an arithmetic number, because the mean of its divisors is an integer number (577463814948).

Almost surely, 2^{2021123352311} is an apocalyptic number.

2021123352311 is a deficient number, since it is larger than the sum of its proper divisors (288731907481).

2021123352311 is an equidigital number, since it uses as much as digits as its factorization.

2021123352311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288731907480.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 2021123352311 its reverse (1132533211202), we get a palindrome (3153656563513).

The spelling of 2021123352311 in words is "two trillion, twenty-one billion, one hundred twenty-three million, three hundred fifty-two thousand, three hundred eleven".