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222122230 = 251110119993
BaseRepresentation
bin11010011110101…
…01000011110110
3120110221222102021
431033111003312
5423330402410
634012503354
75335002451
oct1517250366
9513858367
10222122230
111044227a0
126247ab5a
1337031695
1421700498
1514778eda
hexd3d50f6

222122230 has 32 divisors (see below), whose sum is σ = 440507808. Its totient is φ = 79968000.

The previous prime is 222122209. The next prime is 222122231. The reversal of 222122230 is 32221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222122231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114 + ... + 21106.

It is an arithmetic number, because the mean of its divisors is an integer number (13765869).

Almost surely, 2222122230 is an apocalyptic number.

222122230 is a deficient number, since it is larger than the sum of its proper divisors (218385578).

222122230 is a wasteful number, since it uses less digits than its factorization.

222122230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20112.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 222122230 is about 14903.7656315443. The cubic root of 222122230 is about 605.6160016846.

Adding to 222122230 its reverse (32221222), we get a palindrome (254343452).

It can be divided in two parts, 22212 and 2230, that added together give a palindrome (24442).

The spelling of 222122230 in words is "two hundred twenty-two million, one hundred twenty-two thousand, two hundred thirty".

Divisors: 1 2 5 10 11 22 55 101 110 202 505 1010 1111 2222 5555 11110 19993 39986 99965 199930 219923 439846 1099615 2019293 2199230 4038586 10096465 20192930 22212223 44424446 111061115 222122230