123010312121 has 8 divisors (see below), whose sum is σ = 130460797440. Its totient is φ = 115583669568.

The previous prime is 123010312111. The next prime is 123010312127. The reversal of 123010312121 is 121213010321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123010312121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 123010312121.

It is not an unprimeable number, because it can be changed into a prime (123010312127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5950061 + ... + 5970698.

It is an arithmetic number, because the mean of its divisors is an integer number (16307599680).

Almost surely, 2^123010312121 is an apocalyptic number.

It is an amenable number.

123010312121 is a deficient number, since it is larger than the sum of its proper divisors (7450485319).

123010312121 is a wasteful number, since it uses less digits than its factorization.

123010312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11921383.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123010312121 its reverse (121213010321), we get a palindrome (244223322442).

The spelling of 123010312121 in words is "one hundred twenty-three billion, ten million, three hundred twelve thousand, one hundred twenty-one".