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12112112201 = 71854193323
BaseRepresentation
bin10110100011111000…
…00010101001001001
31011021010002001101012
423101330002221021
5144301200042301
65321512333305
7606102153320
oct132174025111
934233061335
1012112112201
115155a76192
1224203a4235
1311b04593c7
1482c8830b7
154ad518ebb
hex2d1f02a49

12112112201 has 8 divisors (see below), whose sum is σ = 13843308864. Its totient is φ = 10381139280.

The previous prime is 12112112143. The next prime is 12112112209. The reversal of 12112112201 is 10221121121.

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 12112112201 - 226 = 12045003337 is a prime.

It is a super-2 number, since 2×121121122012 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12112112209) 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, 83126 + ... + 176448.

It is an arithmetic number, because the mean of its divisors is an integer number (1730413608).

Almost surely, 212112112201 is an apocalyptic number.

It is an amenable number.

12112112201 is a deficient number, since it is larger than the sum of its proper divisors (1731196663).

12112112201 is an equidigital number, since it uses as much as digits as its factorization.

12112112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111871.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12112112201 its reverse (10221121121), we get a palindrome (22333233322).

The spelling of 12112112201 in words is "twelve billion, one hundred twelve million, one hundred twelve thousand, two hundred one".

Divisors: 1 7 18541 93323 129787 653261 1730301743 12112112201