20120221113 has 8 divisors (see below), whose sum is σ = 26829843168. Its totient is φ = 13412039904.

The previous prime is 20120221111. The next prime is 20120221153. The reversal of 20120221113 is 31112202102.

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

It is not a de Polignac number, because 20120221113 - 2¹ = 20120221111 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20120221092 and 20120221101.

It is not an unprimeable number, because it can be changed into a prime (20120221111) 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, 327195 + ... + 383792.

It is an arithmetic number, because the mean of its divisors is an integer number (3353730396).

Almost surely, 2^20120221113 is an apocalyptic number.

It is an amenable number.

20120221113 is a deficient number, since it is larger than the sum of its proper divisors (6709622055).

20120221113 is an equidigital number, since it uses as much as digits as its factorization.

20120221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720423.

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

Adding to 20120221113 its reverse (31112202102), we get a palindrome (51232423215).

The spelling of 20120221113 in words is "twenty billion, one hundred twenty million, two hundred twenty-one thousand, one hundred thirteen".