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30223001221 = 76736415411
BaseRepresentation
bin11100001001011011…
…100110011010000101
32220000021220112112121
4130021123212122011
5443344042014341
621514555445541
72116645162120
oct341133463205
986007815477
1030223001221
11118aa107166
125a357568b1
132b0864389a
141669cd73b7
15bbd4c84d1
hex7096e6685

30223001221 has 8 divisors (see below), whose sum is σ = 34591901504. Its totient is φ = 25866933120.

The previous prime is 30223001219. The next prime is 30223001243. The reversal of 30223001221 is 12210032203.

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

It is not a de Polignac number, because 30223001221 - 21 = 30223001219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30223001195 and 30223001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30223001261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3202995 + ... + 3212416.

It is an arithmetic number, because the mean of its divisors is an integer number (4323987688).

Almost surely, 230223001221 is an apocalyptic number.

It is an amenable number.

30223001221 is a deficient number, since it is larger than the sum of its proper divisors (4368900283).

30223001221 is an equidigital number, since it uses as much as digits as its factorization.

30223001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416091.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30223001221 its reverse (12210032203), we get a palindrome (42433033424).

The spelling of 30223001221 in words is "thirty billion, two hundred twenty-three million, one thousand, two hundred twenty-one".

Divisors: 1 7 673 4711 6415411 44907877 4317571603 30223001221