2123311142021 has 8 divisors (see below), whose sum is σ = 2249197464024. Its totient is φ = 1997534338560.

The previous prime is 2123311141999. The next prime is 2123311142027. The reversal of 2123311142021 is 1202411133212.

It can be written as a sum of positive squares in 4 ways, for example, as 1429232205025 + 694078936996 = 1195505^2 + 833114^2 .

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 2123311142021 - 2¹⁰ = 2123311140997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123311142027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27339710 + ... + 27417263.

It is an arithmetic number, because the mean of its divisors is an integer number (281149683003).

Almost surely, 2^{2123311142021} is an apocalyptic number.

It is an amenable number.

2123311142021 is a deficient number, since it is larger than the sum of its proper divisors (125886322003).

2123311142021 is a wasteful number, since it uses less digits than its factorization.

2123311142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54759271.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 2123311142021 its reverse (1202411133212), we get a palindrome (3325722275233).

The spelling of 2123311142021 in words is "two trillion, one hundred twenty-three billion, three hundred eleven million, one hundred forty-two thousand, twenty-one".