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30122011212 = 22318341136861
BaseRepresentation
bin11100000011011010…
…010110101001001100
32212202020212201021220
4130003122112221030
5443142213324322
621500551123340
72114310604446
oct340332265114
985666781256
1030122011212
11118580a9947
125a07973550
132ac0744597
14165a729496
15bb46ca55c
hex703696a4c

30122011212 has 24 divisors (see below), whose sum is σ = 70289038512. Its totient is φ = 10040049600.

The previous prime is 30122011193. The next prime is 30122011237. The reversal of 30122011212 is 21211022103.

It is a junction number, because it is equal to n+sod(n) for n = 30122011191 and 30122011200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151662 + ... + 288522.

It is an arithmetic number, because the mean of its divisors is an integer number (2928709938).

Almost surely, 230122011212 is an apocalyptic number.

It is an amenable number.

30122011212 is an abundant number, since it is smaller than the sum of its proper divisors (40167027300).

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

30122011212 is a wasteful number, since it uses less digits than its factorization.

30122011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155209 (or 155207 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 30122011212 its reverse (21211022103), we get a palindrome (51333033315).

The spelling of 30122011212 in words is "thirty billion, one hundred twenty-two million, eleven thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 18341 36682 55023 73364 110046 136861 220092 273722 410583 547444 821166 1642332 2510167601 5020335202 7530502803 10040670404 15061005606 30122011212