20120320220111 has 4 divisors (see below), whose sum is σ = 20180024434752. Its totient is φ = 20060616005472.

The previous prime is 20120320220081. The next prime is 20120320220129. The reversal of 20120320220111 is 11102202302102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20120320220111 - 2²² = 20120316025807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20120320220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120320220311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29852106815 + ... + 29852107488.

It is an arithmetic number, because the mean of its divisors is an integer number (5045006108688).

Almost surely, 2^{20120320220111} is an apocalyptic number.

20120320220111 is a deficient number, since it is larger than the sum of its proper divisors (59704214641).

20120320220111 is an equidigital number, since it uses as much as digits as its factorization.

20120320220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59704214640.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20120320220111 its reverse (11102202302102), we get a palindrome (31222522522213).

The spelling of 20120320220111 in words is "twenty trillion, one hundred twenty billion, three hundred twenty million, two hundred twenty thousand, one hundred eleven".