1231002121123 has 8 divisors (see below), whose sum is σ = 1244883924000. Its totient is φ = 1217121436608.

The previous prime is 1231002121121. The next prime is 1231002121127. The reversal of 1231002121123 is 3211212001321.

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

It is a cyclic number.

It is not a de Polignac number, because 1231002121123 - 2¹ = 1231002121121 is a prime.

It is a super-2 number, since 2×1231002121123² (a number of 25 digits) contains 22 as substring.

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 1231002121123.

It is not an unprimeable number, because it can be changed into a prime (1231002121121) 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, 2042353 + ... + 2575501.

It is an arithmetic number, because the mean of its divisors is an integer number (155610490500).

Almost surely, 2^{1231002121123} is an apocalyptic number.

1231002121123 is a deficient number, since it is larger than the sum of its proper divisors (13881802877).

1231002121123 is an equidigital number, since it uses as much as digits as its factorization.

1231002121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559181.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1231002121123 its reverse (3211212001321), we get a palindrome (4442214122444).

The spelling of 1231002121123 in words is "one trillion, two hundred thirty-one billion, two million, one hundred twenty-one thousand, one hundred twenty-three".