1323111010212 has 36 divisors (see below), whose sum is σ = 3377644782876. Its totient is φ = 436670299200.

The previous prime is 1323111010201. The next prime is 1323111010217. The reversal of 1323111010212 is 2120101113231.

1323111010212 is a `hidden beast` number, since 132 + 311 + 1 + 0 + 10 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1191468303936 + 131642706276 = 1091544^2 + 362826^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (1323111010217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181942323 + ... + 181949594.

It is an arithmetic number, because the mean of its divisors is an integer number (93823466191).

Almost surely, 2^{1323111010212} is an apocalyptic number.

1323111010212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1323111010212 is an abundant number, since it is smaller than the sum of its proper divisors (2054533772664).

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

1323111010212 is a wasteful number, since it uses less digits than its factorization.

1323111010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363892028 (or 363892023 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1323111010212 its reverse (2120101113231), we get a palindrome (3443212123443).

The spelling of 1323111010212 in words is "one trillion, three hundred twenty-three billion, one hundred eleven million, ten thousand, two hundred twelve".