20121313401111 has 16 divisors (see below), whose sum is σ = 28970867523584. Its totient is φ = 12348607335264.

The previous prime is 20121313401073. The next prime is 20121313401149. The reversal of 20121313401111 is 11110431312102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20121313401073) and next prime (20121313401149).

It is not a de Polignac number, because 20121313401111 - 2⁷ = 20121313400983 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 (20121313401191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 702889111 + ... + 702917736.

It is an arithmetic number, because the mean of its divisors is an integer number (1810679220224).

Almost surely, 2^{20121313401111} is an apocalyptic number.

20121313401111 is a deficient number, since it is larger than the sum of its proper divisors (8849554122473).

20121313401111 is a wasteful number, since it uses less digits than its factorization.

20121313401111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405807230.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 20121313401111 its reverse (11110431312102), we get a palindrome (31231744713213).

The spelling of 20121313401111 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirteen million, four hundred one thousand, one hundred eleven".