12021122013 has 8 divisors (see below), whose sum is σ = 16028728608. Its totient is φ = 8013798384.

The previous prime is 12021121997. The next prime is 12021122033. The reversal of 12021122013 is 31022112021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12021122013 - 2⁴ = 12021121997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12021121983 and 12021122001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021122033) 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, 66331 + ... + 168647.

It is an arithmetic number, because the mean of its divisors is an integer number (2003591076).

Almost surely, 2^12021122013 is an apocalyptic number.

It is an amenable number.

12021122013 is a deficient number, since it is larger than the sum of its proper divisors (4007606595).

12021122013 is a wasteful number, since it uses less digits than its factorization.

12021122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141483.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12021122013 its reverse (31022112021), we get a palindrome (43043234034).

The spelling of 12021122013 in words is "twelve billion, twenty-one million, one hundred twenty-two thousand, thirteen".