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12012122211 = 34004040737
BaseRepresentation
bin10110010111111101…
…00111000001100011
31011000010221000220020
423023332213001203
5144100100402321
65303541244523
7603446232315
oct131376470143
934003830806
1012012122211
115104591231
1223b2a03743
13119581a32b
1481d4957b5
154a48674c6
hex2cbfa7063

12012122211 has 4 divisors (see below), whose sum is σ = 16016162952. Its totient is φ = 8008081472.

The previous prime is 12012122201. The next prime is 12012122251. The reversal of 12012122211 is 11222121021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12012122211 - 26 = 12012122147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012122201) 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 3 ways as a sum of consecutive naturals, for example, 2002020366 + ... + 2002020371.

It is an arithmetic number, because the mean of its divisors is an integer number (4004040738).

Almost surely, 212012122211 is an apocalyptic number.

12012122211 is a deficient number, since it is larger than the sum of its proper divisors (4004040741).

12012122211 is an equidigital number, since it uses as much as digits as its factorization.

12012122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004040740.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12012122211 its reverse (11222121021), we get a palindrome (23234243232).

The spelling of 12012122211 in words is "twelve billion, twelve million, one hundred twenty-two thousand, two hundred eleven".

Divisors: 1 3 4004040737 12012122211