20120320112231 has 2 divisors, whose sum is σ = 20120320112232. Its totient is φ = 20120320112230.

The previous prime is 20120320112183. The next prime is 20120320112251. The reversal of 20120320112231 is 13221102302102.

It is an a-pointer prime, because the next prime (20120320112251) can be obtained adding 20120320112231 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20120320112231 - 2⁴² = 15722273601127 is a prime.

It is a super-2 number, since 2×20120320112231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120320112251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060160056115 + 10060160056116.

It is an arithmetic number, because the mean of its divisors is an integer number (10060160056116).

Almost surely, 2^{20120320112231} is an apocalyptic number.

20120320112231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120320112231 is an equidigital number, since it uses as much as digits as its factorization.

20120320112231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20120320112231 its reverse (13221102302102), we get a palindrome (33341422414333).

The spelling of 20120320112231 in words is "twenty trillion, one hundred twenty billion, three hundred twenty million, one hundred twelve thousand, two hundred thirty-one".