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12222200031 = 317239650981
BaseRepresentation
bin10110110000111111…
…11111100011011111
31011112210020002111020
423120133333203133
5200012340400111
65340444055223
7611606662146
oct133037774337
934483202436
1012222200031
115202127868
122451234513
1311ca1c2732
1483d33c75d
154b8012906
hex2d87ff8df

12222200031 has 8 divisors (see below), whose sum is σ = 17254870704. Its totient is φ = 7668831360.

The previous prime is 12222199993. The next prime is 12222200041. The reversal of 12222200031 is 13000222221.

It is a happy number.

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

It is not a de Polignac number, because 12222200031 - 210 = 12222199007 is a prime.

It is a super-2 number, since 2×122222000312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222200041) 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, 119825440 + ... + 119825541.

It is an arithmetic number, because the mean of its divisors is an integer number (2156858838).

Almost surely, 212222200031 is an apocalyptic number.

12222200031 is a deficient number, since it is larger than the sum of its proper divisors (5032670673).

12222200031 is a wasteful number, since it uses less digits than its factorization.

12222200031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239651001.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12222200031 its reverse (13000222221), we get a palindrome (25222422252).

The spelling of 12222200031 in words is "twelve billion, two hundred twenty-two million, two hundred thousand, thirty-one".

Divisors: 1 3 17 51 239650981 718952943 4074066677 12222200031