1711205121 has 4 divisors (see below), whose sum is σ = 2281606832. Its totient is φ = 1140803412.

The previous prime is 1711205101. The next prime is 1711205137. The reversal of 1711205121 is 1215021171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1711205121 - 2⁷ = 1711204993 is a prime.

It is a super-2 number, since 2×1711205121² = 5856445932273249282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1711205101) 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, 285200851 + ... + 285200856.

It is an arithmetic number, because the mean of its divisors is an integer number (570401708).

Almost surely, 2^1711205121 is an apocalyptic number.

It is an amenable number.

1711205121 is a deficient number, since it is larger than the sum of its proper divisors (570401711).

1711205121 is an equidigital number, since it uses as much as digits as its factorization.

1711205121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570401710.

The product of its (nonzero) digits is 140, while the sum is 21.

The square root of 1711205121 is about 41366.7151342719. The cubic root of 1711205121 is about 1196.0996328765.

Adding to 1711205121 its reverse (1215021171), we get a palindrome (2926226292).

The spelling of 1711205121 in words is "one billion, seven hundred eleven million, two hundred five thousand, one hundred twenty-one".