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2220012131 = 9722886723
BaseRepresentation
bin1000010001010010…
…1011001001100011
312201201100022010112
42010110223021203
514021310342011
61004142321535
7106004535401
oct20424531143
95651308115
102220012131
11a3a158a77
1251b5892ab
13294c1a45c
14170baa471
15ced7158b
hex8452b263

2220012131 has 4 divisors (see below), whose sum is σ = 2242898952. Its totient is φ = 2197125312.

The previous prime is 2220012073. The next prime is 2220012149. The reversal of 2220012131 is 1312100222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2220012131 - 214 = 2219995747 is a prime.

It is a super-2 number, since 2×22200121312 = 9856907723574322322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220012191) 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 3 ways as a sum of consecutive naturals, for example, 11443265 + ... + 11443458.

It is an arithmetic number, because the mean of its divisors is an integer number (560724738).

Almost surely, 22220012131 is an apocalyptic number.

2220012131 is a deficient number, since it is larger than the sum of its proper divisors (22886821).

2220012131 is an equidigital number, since it uses as much as digits as its factorization.

2220012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22886820.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2220012131 is about 47117.0046904512. The cubic root of 2220012131 is about 1304.5231261635.

Adding to 2220012131 its reverse (1312100222), we get a palindrome (3532112353).

The spelling of 2220012131 in words is "two billion, two hundred twenty million, twelve thousand, one hundred thirty-one".

Divisors: 1 97 22886723 2220012131