1313021002212 has 18 divisors (see below), whose sum is σ = 3319025311238. Its totient is φ = 437673667392.

The previous prime is 1313021002193. The next prime is 1313021002217. The reversal of 1313021002212 is 2122001203131.

1313021002212 is a `hidden beast` number, since 131 + 302 + 10 + 0 + 221 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 786084384996 + 526936617216 = 886614^2 + 725904^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 (1313021002217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18236402773 + ... + 18236402844.

Almost surely, 2^{1313021002212} is an apocalyptic number.

1313021002212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1313021002212 is an abundant number, since it is smaller than the sum of its proper divisors (2006004309026).

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

1313021002212 is a wasteful number, since it uses less digits than its factorization.

1313021002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36472805627 (or 36472805622 counting only the distinct ones).

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

Adding to 1313021002212 its reverse (2122001203131), we get a palindrome (3435022205343).

The spelling of 1313021002212 in words is "one trillion, three hundred thirteen billion, twenty-one million, two thousand, two hundred twelve".