521412334111 has 8 divisors (see below), whose sum is σ = 539400265200. Its totient is φ = 503424949440.

The previous prime is 521412334097. The next prime is 521412334147. The reversal of 521412334111 is 111433214125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521412334111 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 521412334111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521412334411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3125196 + ... + 3287806.

It is an arithmetic number, because the mean of its divisors is an integer number (67425033150).

Almost surely, 2^521412334111 is an apocalyptic number.

521412334111 is a deficient number, since it is larger than the sum of its proper divisors (17987931089).

521412334111 is a wasteful number, since it uses less digits than its factorization.

521412334111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273209.

The product of its digits is 2880, while the sum is 28.

Adding to 521412334111 its reverse (111433214125), we get a palindrome (632845548236).

The spelling of 521412334111 in words is "five hundred twenty-one billion, four hundred twelve million, three hundred thirty-four thousand, one hundred eleven".