345523220011 has 4 divisors (see below), whose sum is σ = 345524541232. Its totient is φ = 345521898792.

The previous prime is 345523219957. The next prime is 345523220047. The reversal of 345523220011 is 110022325543.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 110022325543 = 13 ⋅8463255811.

It is a cyclic number.

It is not a de Polignac number, because 345523220011 - 2³³ = 336933285419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345523229011) 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, 121896 + ... + 840181.

It is an arithmetic number, because the mean of its divisors is an integer number (86381135308).

Almost surely, 2^345523220011 is an apocalyptic number.

345523220011 is a deficient number, since it is larger than the sum of its proper divisors (1321221).

345523220011 is an equidigital number, since it uses as much as digits as its factorization.

345523220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321220.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 345523220011 its reverse (110022325543), we get a palindrome (455545545554).

The spelling of 345523220011 in words is "three hundred forty-five billion, five hundred twenty-three million, two hundred twenty thousand, eleven".