1312210021123 has 8 divisors (see below), whose sum is σ = 1324713444560. Its totient is φ = 1299715048800.

The previous prime is 1312210021081. The next prime is 1312210021181. The reversal of 1312210021123 is 3211200122131.

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 1312210021123 - 2¹³ = 1312210012931 is a prime.

It is a super-2 number, since 2×1312210021123² (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 1312210021123.

It is not an unprimeable number, because it can be changed into a prime (1312210025123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1800540 + ... + 2422057.

It is an arithmetic number, because the mean of its divisors is an integer number (165589180570).

Almost surely, 2^{1312210021123} is an apocalyptic number.

1312210021123 is a deficient number, since it is larger than the sum of its proper divisors (12503423437).

1312210021123 is a wasteful number, since it uses less digits than its factorization.

1312210021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225557.

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

Adding to 1312210021123 its reverse (3211200122131), we get a palindrome (4523410143254).

The spelling of 1312210021123 in words is "one trillion, three hundred twelve billion, two hundred ten million, twenty-one thousand, one hundred twenty-three".