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2223132121 = 74310371707
BaseRepresentation
bin1000010010000010…
…0100110111011001
312201221012210221201
42010200210313121
514023110211441
61004333234201
7106043211520
oct20440446731
95657183851
102223132121
11a4099a081
12520632961
132957705c2
1417137d4b7
15d028ac31
hex84824dd9

2223132121 has 16 divisors (see below), whose sum is σ = 2625086464. Its totient is φ = 1843131024.

The previous prime is 2223132097. The next prime is 2223132133. The reversal of 2223132121 is 1212313222.

It is not a de Polignac number, because 2223132121 - 29 = 2223131609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2223132421) 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 15 ways as a sum of consecutive naturals, for example, 4851 + ... + 66856.

It is an arithmetic number, because the mean of its divisors is an integer number (164067904).

Almost surely, 22223132121 is an apocalyptic number.

It is an amenable number.

2223132121 is a deficient number, since it is larger than the sum of its proper divisors (401954343).

2223132121 is a wasteful number, since it uses less digits than its factorization.

2223132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71860.

The product of its digits is 288, while the sum is 19.

The square root of 2223132121 is about 47150.1020253403. The cubic root of 2223132121 is about 1305.1339627504.

Adding to 2223132121 its reverse (1212313222), we get a palindrome (3435445343).

The spelling of 2223132121 in words is "two billion, two hundred twenty-three million, one hundred thirty-two thousand, one hundred twenty-one".

Divisors: 1 7 43 103 301 721 4429 31003 71707 501949 3083401 7385821 21583807 51700747 317590303 2223132121