711135081412121 has 4 divisors (see below), whose sum is σ = 711135240427812. Its totient is φ = 711134922396432.

The previous prime is 711135081412109. The next prime is 711135081412127. The reversal of 711135081412121 is 121214180531117.

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

It can be written as a sum of positive squares in 2 ways, for example, as 283587654483721 + 427547426928400 = 16840061^2 + 20677220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-711135081412121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (711135081412127) 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, 72599606 + ... + 81810591.

It is an arithmetic number, because the mean of its divisors is an integer number (177783810106953).

Almost surely, 2^{711135081412121} is an apocalyptic number.

It is an amenable number.

711135081412121 is a deficient number, since it is larger than the sum of its proper divisors (159015691).

711135081412121 is a wasteful number, since it uses less digits than its factorization.

711135081412121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159015690.

The product of its (nonzero) digits is 13440, while the sum is 38.

The spelling of 711135081412121 in words is "seven hundred eleven trillion, one hundred thirty-five billion, eighty-one million, four hundred twelve thousand, one hundred twenty-one".