2123330002021 has 4 divisors (see below), whose sum is σ = 2123359789932. Its totient is φ = 2123300214112.

The previous prime is 2123330002019. The next prime is 2123330002033. The reversal of 2123330002021 is 1202000333212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1076976950625 + 1046353051396 = 1037775^2 + 1022914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123330002021 - 2¹ = 2123330002019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2123330002021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123330002051) 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, 14786776 + ... + 14929681.

It is an arithmetic number, because the mean of its divisors is an integer number (530839947483).

Almost surely, 2^{2123330002021} is an apocalyptic number.

It is an amenable number.

2123330002021 is a deficient number, since it is larger than the sum of its proper divisors (29787911).

2123330002021 is an equidigital number, since it uses as much as digits as its factorization.

2123330002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29787910.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 2123330002021 its reverse (1202000333212), we get a palindrome (3325330335233).

The spelling of 2123330002021 in words is "two trillion, one hundred twenty-three billion, three hundred thirty million, two thousand, twenty-one".