1210200123 has 16 divisors (see below), whose sum is σ = 1762275456. Its totient is φ = 732627840.

The previous prime is 1210200113. The next prime is 1210200149. The reversal of 1210200123 is 3210020121.

It is not a de Polignac number, because 1210200123 - 2⁸ = 1210199867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210200099 and 1210200108.

It is not an unprimeable number, because it can be changed into a prime (1210200113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9715 + ... + 50147.

It is an arithmetic number, because the mean of its divisors is an integer number (110142216).

Almost surely, 2^1210200123 is an apocalyptic number.

1210200123 is a deficient number, since it is larger than the sum of its proper divisors (552075333).

1210200123 is a wasteful number, since it uses less digits than its factorization.

1210200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41354.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1210200123 is about 34787.9307087961. The cubic root of 1210200123 is about 1065.6609805024.

Adding to 1210200123 its reverse (3210020121), we get a palindrome (4420220244).

The spelling of 1210200123 in words is "one billion, two hundred ten million, two hundred thousand, one hundred twenty-three".