20121103313101 has 4 divisors (see below), whose sum is σ = 22995546643552. Its totient is φ = 17246659982652.

The previous prime is 20121103313071. The next prime is 20121103313131. The reversal of 20121103313101 is 10131330112102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20121103313071) and next prime (20121103313131).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20121103313101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121103313131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437221665215 + ... + 1437221665228.

It is an arithmetic number, because the mean of its divisors is an integer number (5748886660888).

Almost surely, 2^{20121103313101} is an apocalyptic number.

It is an amenable number.

20121103313101 is a deficient number, since it is larger than the sum of its proper divisors (2874443330451).

20121103313101 is an equidigital number, since it uses as much as digits as its factorization.

20121103313101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874443330450.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 20121103313101 its reverse (10131330112102), we get a palindrome (30252433425203).

The spelling of 20121103313101 in words is "twenty trillion, one hundred twenty-one billion, one hundred three million, three hundred thirteen thousand, one hundred one".