20353322111 has 4 divisors (see below), whose sum is σ = 20563150272. Its totient is φ = 20143493952.

The previous prime is 20353322071. The next prime is 20353322137. The reversal of 20353322111 is 11122335302.

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 20353322111 - 2²² = 20349127807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20353322911) 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, 104913935 + ... + 104914128.

It is an arithmetic number, because the mean of its divisors is an integer number (5140787568).

Almost surely, 2^20353322111 is an apocalyptic number.

20353322111 is a deficient number, since it is larger than the sum of its proper divisors (209828161).

20353322111 is an equidigital number, since it uses as much as digits as its factorization.

20353322111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209828160.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 20353322111 its reverse (11122335302), we get a palindrome (31475657413).

The spelling of 20353322111 in words is "twenty billion, three hundred fifty-three million, three hundred twenty-two thousand, one hundred eleven".