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30000022212 = 22331220336607
BaseRepresentation
bin11011111100001001…
…000000001011000100
32212102202100000211210
4123330021000023010
5442420001202322
621440512331420
72111266660416
oct337411001304
985382300753
1030000022212
11117a5259796
125992b43b70
132aa13a2244
1416484529b6
15ba8b3070c
hex6fc2402c4

30000022212 has 48 divisors (see below), whose sum is σ = 72292892672. Its totient is φ = 9672769440.

The previous prime is 30000022211. The next prime is 30000022237. The reversal of 30000022212 is 21222000003.

It is a super-3 number, since 3×300000222123 (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (30000022211) 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, 801213 + ... + 837819.

Almost surely, 230000022212 is an apocalyptic number.

It is an amenable number.

30000022212 is an abundant number, since it is smaller than the sum of its proper divisors (42292870460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30000022212 is a wasteful number, since it uses less digits than its factorization.

30000022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38848 (or 38846 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 30000022212 its reverse (21222000003), we get a palindrome (51222022215).

The spelling of 30000022212 in words is "thirty billion, twenty-two thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 31 62 93 124 186 372 2203 4406 6609 8812 13218 26436 36607 68293 73214 109821 136586 146428 204879 219642 273172 409758 439284 819516 1134817 2269634 3404451 4539268 6808902 13617804 80645221 161290442 241935663 322580884 483871326 967742652 2500001851 5000003702 7500005553 10000007404 15000011106 30000022212