1215414313111 has 4 divisors (see below), whose sum is σ = 1216459382472. Its totient is φ = 1214369243752.

The previous prime is 1215414313073. The next prime is 1215414313123. The reversal of 1215414313111 is 1113134145121.

It is a happy number.

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 1215414313111 - 2¹³ = 1215414304919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215414313111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215414313151) 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, 522532936 + ... + 522535261.

It is an arithmetic number, because the mean of its divisors is an integer number (304114845618).

Almost surely, 2^{1215414313111} is an apocalyptic number.

1215414313111 is a deficient number, since it is larger than the sum of its proper divisors (1045069361).

1215414313111 is a wasteful number, since it uses less digits than its factorization.

1215414313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045069360.

The product of its digits is 1440, while the sum is 28.

Adding to 1215414313111 its reverse (1113134145121), we get a palindrome (2328548458232).

The spelling of 1215414313111 in words is "one trillion, two hundred fifteen billion, four hundred fourteen million, three hundred thirteen thousand, one hundred eleven".