2123203011001 has 16 divisors (see below), whose sum is σ = 2156721590160. Its totient is φ = 2089988812800.

The previous prime is 2123203010953. The next prime is 2123203011029. The reversal of 2123203011001 is 1001103023212.

It can be written as a sum of positive squares in 8 ways, for example, as 348246335376 + 1774956675625 = 590124^2 + 1332275^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123203011001 - 2³³ = 2114613076409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123203011071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10274371 + ... + 10478983.

It is an arithmetic number, because the mean of its divisors is an integer number (134795099385).

Almost surely, 2^{2123203011001} is an apocalyptic number.

It is an amenable number.

2123203011001 is a deficient number, since it is larger than the sum of its proper divisors (33518579159).

2123203011001 is a wasteful number, since it uses less digits than its factorization.

2123203011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205356.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2123203011001 its reverse (1001103023212), we get a palindrome (3124306034213).

The spelling of 2123203011001 in words is "two trillion, one hundred twenty-three billion, two hundred three million, eleven thousand, one".