20331020322111 has 4 divisors (see below), whose sum is σ = 27108027096152. Its totient is φ = 13554013548072.

The previous prime is 20331020322077. The next prime is 20331020322131. The reversal of 20331020322111 is 11122302013302.

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

It is not a de Polignac number, because 20331020322111 - 2³⁸ = 20056142415167 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 (20331020322131) 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, 3388503387016 + ... + 3388503387021.

It is an arithmetic number, because the mean of its divisors is an integer number (6777006774038).

Almost surely, 2^{20331020322111} is an apocalyptic number.

20331020322111 is a deficient number, since it is larger than the sum of its proper divisors (6777006774041).

20331020322111 is an equidigital number, since it uses as much as digits as its factorization.

20331020322111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777006774040.

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

Adding to 20331020322111 its reverse (11122302013302), we get a palindrome (31453322335413).

The spelling of 20331020322111 in words is "twenty trillion, three hundred thirty-one billion, twenty million, three hundred twenty-two thousand, one hundred eleven".