2123043001 has 2 divisors, whose sum is σ = 2123043002. Its totient is φ = 2123043000.

The previous prime is 2123042993. The next prime is 2123043053. The reversal of 2123043001 is 1003403212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1654536976 + 468506025 = 40676^2 + 21645^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123043001 - 2³ = 2123042993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123043061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061521500 + 1061521501.

It is an arithmetic number, because the mean of its divisors is an integer number (1061521501).

Almost surely, 2^2123043001 is an apocalyptic number.

It is an amenable number.

2123043001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123043001 is an equidigital number, since it uses as much as digits as its factorization.

2123043001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2123043001 is about 46076.4907626438. The cubic root of 2123043001 is about 1285.2460077985.

Adding to 2123043001 its reverse (1003403212), we get a palindrome (3126446213).

The spelling of 2123043001 in words is "two billion, one hundred twenty-three million, forty-three thousand, one".