2121223013 has 16 divisors (see below), whose sum is σ = 2613426816. Its totient is φ = 1676600640.

The previous prime is 2121223003. The next prime is 2121223031. The reversal of 2121223013 is 3103221212.

It is not a de Polignac number, because 2121223013 - 2⁴ = 2121222997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121222982 and 2121223000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121223003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80678 + ... + 103688.

It is an arithmetic number, because the mean of its divisors is an integer number (163339176).

Almost surely, 2^2121223013 is an apocalyptic number.

It is an amenable number.

2121223013 is a deficient number, since it is larger than the sum of its proper divisors (492203803).

2121223013 is a wasteful number, since it uses less digits than its factorization.

2121223013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24044.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2121223013 is about 46056.7368904919. The cubic root of 2121223013 is about 1284.8786418621.

Adding to 2121223013 its reverse (3103221212), we get a palindrome (5224444225).

The spelling of 2121223013 in words is "two billion, one hundred twenty-one million, two hundred twenty-three thousand, thirteen".