2131122200123 has 16 divisors (see below), whose sum is σ = 2580723638784. Its totient is φ = 1717966838400.

The previous prime is 2131122200111. The next prime is 2131122200131. The reversal of 2131122200123 is 3210022211312.

It is a cyclic number.

It is not a de Polignac number, because 2131122200123 - 2⁴ = 2131122200107 is a prime.

It is a super-2 number, since 2×2131122200123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131122200095 and 2131122200104.

It is not an unprimeable number, because it can be changed into a prime (2131122200323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6387653 + ... + 6712998.

It is an arithmetic number, because the mean of its divisors is an integer number (161295227424).

Almost surely, 2^{2131122200123} is an apocalyptic number.

2131122200123 is a deficient number, since it is larger than the sum of its proper divisors (449601438661).

2131122200123 is a wasteful number, since it uses less digits than its factorization.

2131122200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13102042.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2131122200123 its reverse (3210022211312), we get a palindrome (5341144411435).

The spelling of 2131122200123 in words is "two trillion, one hundred thirty-one billion, one hundred twenty-two million, two hundred thousand, one hundred twenty-three".