712121711 has 4 divisors (see below), whose sum is σ = 813853392. Its totient is φ = 610390032.

The previous prime is 712121629. The next prime is 712121713. The reversal of 712121711 is 117121217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 117121217 = 83 ⋅1411099.

It is a de Polignac number, because none of the positive numbers 2^k-712121711 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 (712121713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50865830 + ... + 50865843.

It is an arithmetic number, because the mean of its divisors is an integer number (203463348).

Almost surely, 2^712121711 is an apocalyptic number.

712121711 is a deficient number, since it is larger than the sum of its proper divisors (101731681).

712121711 is a wasteful number, since it uses less digits than its factorization.

712121711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101731680.

The product of its digits is 196, while the sum is 23.

The square root of 712121711 is about 26685.6086870808. The cubic root of 712121711 is about 892.9998971721. Note that the first 3 decimals are identical.

Adding to 712121711 its reverse (117121217), we get a palindrome (829242928).

It can be divided in two parts, 7121217 and 11, that multiplied together give a palindrome (78333387).

The spelling of 712121711 in words is "seven hundred twelve million, one hundred twenty-one thousand, seven hundred eleven".