220120011323031 has 4 divisors (see below), whose sum is σ = 293493348430712. Its totient is φ = 146746674215352.

The previous prime is 220120011323021. The next prime is 220120011323059. The reversal of 220120011323031 is 130323110021022.

220120011323031 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 220120011323031 - 2¹⁰ = 220120011322007 is a prime.

It is a super-2 number, since 2×220120011323031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220120011322989 and 220120011323007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220120011323021) 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, 36686668553836 + ... + 36686668553841.

It is an arithmetic number, because the mean of its divisors is an integer number (73373337107678).

Almost surely, 2^{220120011323031} is an apocalyptic number.

220120011323031 is a deficient number, since it is larger than the sum of its proper divisors (73373337107681).

220120011323031 is an equidigital number, since it uses as much as digits as its factorization.

220120011323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73373337107680.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 220120011323031 its reverse (130323110021022), we get a palindrome (350443121344053).

The spelling of 220120011323031 in words is "two hundred twenty trillion, one hundred twenty billion, eleven million, three hundred twenty-three thousand, thirty-one".