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12020022212 = 22111931463807
BaseRepresentation
bin10110011000111001…
…01111101111000100
31011000200210101122212
423030130233233010
5144104111202322
65304422442552
7603603334352
oct131434575704
934020711585
1012020022212
115108a97660
1223b5593458
1311973550a3
148205507d2
154a53c80e2
hex2cc72fbc4

12020022212 has 48 divisors (see below), whose sum is σ = 24934318080. Its totient is φ = 5009104800.

The previous prime is 12020022211. The next prime is 12020022241. The reversal of 12020022212 is 21222002021.

It is a super-4 number, since 4×120200222124 (a number of 41 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (12020022211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205988 + ... + 257819.

It is an arithmetic number, because the mean of its divisors is an integer number (519464960).

Almost surely, 212020022212 is an apocalyptic number.

It is an amenable number.

12020022212 is an abundant number, since it is smaller than the sum of its proper divisors (12914295868).

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

12020022212 is a wasteful number, since it uses less digits than its factorization.

12020022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463872 (or 463870 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12020022212 its reverse (21222002021), we get a palindrome (33242024233).

The spelling of 12020022212 in words is "twelve billion, twenty million, twenty-two thousand, two hundred twelve".

Divisors: 1 2 4 11 19 22 31 38 44 62 76 124 209 341 418 589 682 836 1178 1364 2356 6479 12958 25916 463807 927614 1855228 5101877 8812333 10203754 14378017 17624666 20407508 28756034 35249332 57512068 96935663 158158187 193871326 273182323 316316374 387742652 546364646 632632748 1092729292 3005005553 6010011106 12020022212