1200101161 has 16 divisors (see below), whose sum is σ = 1446681600. Its totient is φ = 972526608.

The previous prime is 1200101131. The next prime is 1200101183. The reversal of 1200101161 is 1611010021.

It is a cyclic number.

It is not a de Polignac number, because 1200101161 - 2²³ = 1191712553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200101131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57930 + ... + 75868.

It is an arithmetic number, because the mean of its divisors is an integer number (90417600).

Almost surely, 2^1200101161 is an apocalyptic number.

It is an amenable number.

1200101161 is a deficient number, since it is larger than the sum of its proper divisors (246580439).

1200101161 is a wasteful number, since it uses less digits than its factorization.

1200101161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18468.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1200101161 is about 34642.4762538708. The cubic root of 1200101161 is about 1062.6884293445.

Adding to 1200101161 its reverse (1611010021), we get a palindrome (2811111182).

The spelling of 1200101161 in words is "one billion, two hundred million, one hundred one thousand, one hundred sixty-one".