1312320011022 has 96 divisors (see below), whose sum is σ = 3095763458112. Its totient is φ = 400091415552.

The previous prime is 1312320010993. The next prime is 1312320011029. The reversal of 1312320011022 is 2201100232131.

1312320011022 is a `hidden beast` number, since 1 + 312 + 320 + 0 + 1 + 10 + 22 = 666.

It is a super-2 number, since 2×1312320011022² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1312320010986 and 1312320011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312320011029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9247588 + ... + 9388424.

It is an arithmetic number, because the mean of its divisors is an integer number (32247536022).

Almost surely, 2^{1312320011022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312320011022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1547881729056).

1312320011022 is an abundant number, since it is smaller than the sum of its proper divisors (1783443447090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312320011022 is a wasteful number, since it uses less digits than its factorization.

1312320011022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141722 (or 141719 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1312320011022 its reverse (2201100232131), we get a palindrome (3513420243153).

The spelling of 1312320011022 in words is "one trillion, three hundred twelve billion, three hundred twenty million, eleven thousand, twenty-two".