1212013321011 has 6 divisors (see below), whose sum is σ = 1750685908140. Its totient is φ = 808008880668.

The previous prime is 1212013320983. The next prime is 1212013321021. The reversal of 1212013321011 is 1101233102121.

1212013321011 is a `hidden beast` number, since 121 + 201 + 332 + 1 + 0 + 11 = 666.

It is not a de Polignac number, because 1212013321011 - 2¹⁰ = 1212013319987 is a prime.

It is a super-2 number, since 2×1212013321011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212013321021) 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, 67334073381 + ... + 67334073398.

It is an arithmetic number, because the mean of its divisors is an integer number (291780984690).

Almost surely, 2^{1212013321011} is an apocalyptic number.

1212013321011 is a deficient number, since it is larger than the sum of its proper divisors (538672587129).

1212013321011 is a wasteful number, since it uses less digits than its factorization.

1212013321011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134668146785 (or 134668146782 counting only the distinct ones).

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

Adding to 1212013321011 its reverse (1101233102121), we get a palindrome (2313246423132).

The spelling of 1212013321011 in words is "one trillion, two hundred twelve billion, thirteen million, three hundred twenty-one thousand, eleven".