12031101211 has 8 divisors (see below), whose sum is σ = 12987096480. Its totient is φ = 11111181312.

The previous prime is 12031101191. The next prime is 12031101233. The reversal of 12031101211 is 11210113021.

It is a happy number.

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 12031101211 - 2⁵ = 12031101179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031101191 and 12031101200.

It is not an unprimeable number, because it can be changed into a prime (12031101281) 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, 9018150 + ... + 9019483.

It is an arithmetic number, because the mean of its divisors is an integer number (1623387060).

Almost surely, 2^12031101211 is an apocalyptic number.

12031101211 is a deficient number, since it is larger than the sum of its proper divisors (955995269).

12031101211 is a wasteful number, since it uses less digits than its factorization.

12031101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18037685.

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

Adding to 12031101211 its reverse (11210113021), we get a palindrome (23241214232).

The spelling of 12031101211 in words is "twelve billion, thirty-one million, one hundred one thousand, two hundred eleven".