12031202161 has 8 divisors (see below), whose sum is σ = 13149214848. Its totient is φ = 10917234000.

The previous prime is 12031202143. The next prime is 12031202171. The reversal of 12031202161 is 16120213021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12031202161 - 2¹³ = 12031193969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12031202101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004905 + ... + 1016806.

It is an arithmetic number, because the mean of its divisors is an integer number (1643651856).

Almost surely, 2^12031202161 is an apocalyptic number.

12031202161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12031202161 is a deficient number, since it is larger than the sum of its proper divisors (1118012687).

12031202161 is a wasteful number, since it uses less digits than its factorization.

12031202161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022263.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12031202161 its reverse (16120213021), we get a palindrome (28151415182).

The spelling of 12031202161 in words is "twelve billion, thirty-one million, two hundred two thousand, one hundred sixty-one".