1331210210123 has 4 divisors (see below), whose sum is σ = 1335947613288. Its totient is φ = 1326472806960.

The previous prime is 1331210210089. The next prime is 1331210210129. The reversal of 1331210210123 is 3210120121331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1331210210123 - 2³⁰ = 1330136468299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331210210095 and 1331210210104.

It is not an unprimeable number, because it can be changed into a prime (1331210210129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2368701161 + ... + 2368701722.

It is an arithmetic number, because the mean of its divisors is an integer number (333986903322).

Almost surely, 2^{1331210210123} is an apocalyptic number.

1331210210123 is a deficient number, since it is larger than the sum of its proper divisors (4737403165).

1331210210123 is an equidigital number, since it uses as much as digits as its factorization.

1331210210123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737403164.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1331210210123 its reverse (3210120121331), we get a palindrome (4541330331454).

The spelling of 1331210210123 in words is "one trillion, three hundred thirty-one billion, two hundred ten million, two hundred ten thousand, one hundred twenty-three".