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12020211330 = 235400673711
BaseRepresentation
bin10110011000111010…
…11101111010000010
31011000201011000002020
423030131131322002
5144104133230310
65304430502310
7603605052621
oct131435357202
934021130066
1012020211330
115109106756
1223b5664996
1311973c01aa
1482059d6b8
154a5414170
hex2cc75de82

12020211330 has 16 divisors (see below), whose sum is σ = 28848507264. Its totient is φ = 3205389680.

The previous prime is 12020211311. The next prime is 12020211331. The reversal of 12020211330 is 3311202021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (12020211331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200336826 + ... + 200336885.

It is an arithmetic number, because the mean of its divisors is an integer number (1803031704).

Almost surely, 212020211330 is an apocalyptic number.

12020211330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020211330 is an abundant number, since it is smaller than the sum of its proper divisors (16828295934).

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

12020211330 is a wasteful number, since it uses less digits than its factorization.

12020211330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400673721.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12020211330 its reverse (3311202021), we get a palindrome (15331413351).

The spelling of 12020211330 in words is "twelve billion, twenty million, two hundred eleven thousand, three hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 400673711 801347422 1202021133 2003368555 2404042266 4006737110 6010105665 12020211330