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30212122010 = 257835200021
BaseRepresentation
bin11100001000110010…
…000110010110011010
32212222112102211001212
4130020302012112122
5443333300401020
621513530343122
72116453541240
oct341062062632
985875384055
1030212122010
11118a3a56484
125a31b8aaa2
132b06304a95
1416686a4790
15bbc579cc5
hex708c8659a

30212122010 has 32 divisors (see below), whose sum is σ = 62899466112. Its totient is φ = 10233639360.

The previous prime is 30212122009. The next prime is 30212122013. The reversal of 30212122010 is 1022121203.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (30212122013) 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, 2594201 + ... + 2605820.

It is an arithmetic number, because the mean of its divisors is an integer number (1965608316).

Almost surely, 230212122010 is an apocalyptic number.

30212122010 is an abundant number, since it is smaller than the sum of its proper divisors (32687344102).

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

30212122010 is a wasteful number, since it uses less digits than its factorization.

30212122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200118.

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

Adding to 30212122010 its reverse (1022121203), we get a palindrome (31234243213).

The spelling of 30212122010 in words is "thirty billion, two hundred twelve million, one hundred twenty-two thousand, ten".

Divisors: 1 2 5 7 10 14 35 70 83 166 415 581 830 1162 2905 5810 5200021 10400042 26000105 36400147 52000210 72800294 182000735 364001470 431601743 863203486 2158008715 3021212201 4316017430 6042424402 15106061005 30212122010