1161102061 has 4 divisors (see below), whose sum is σ = 1326973792. Its totient is φ = 995230332.

The previous prime is 1161102013. The next prime is 1161102071. The reversal of 1161102061 is 1602011611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1602011611 = 3301 ⋅485311.

It is a cyclic number.

It is not a de Polignac number, because 1161102061 - 2⁷ = 1161101933 is a prime.

It is a super-3 number, since 3×1161102061³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161102071) 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, 82935855 + ... + 82935868.

It is an arithmetic number, because the mean of its divisors is an integer number (331743448).

Almost surely, 2^1161102061 is an apocalyptic number.

It is an amenable number.

1161102061 is a deficient number, since it is larger than the sum of its proper divisors (165871731).

1161102061 is an equidigital number, since it uses as much as digits as its factorization.

1161102061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165871730.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1161102061 is about 34074.9477035549. The cubic root of 1161102061 is about 1051.0502148285.

Adding to 1161102061 its reverse (1602011611), we get a palindrome (2763113672).

The spelling of 1161102061 in words is "one billion, one hundred sixty-one million, one hundred two thousand, sixty-one".