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12021210122 = 26010605061
BaseRepresentation
bin10110011001000010…
…10001110000001010
31011000210000202011112
423030201101300022
5144104412210442
65304504130322
7603616412555
oct131441216012
934023022145
1012021210122
1151097290a9
1223b5a669a2
13119767c9ac
1482077d69c
154a5560082
hex2cc851c0a

12021210122 has 4 divisors (see below), whose sum is σ = 18031815186. Its totient is φ = 6010605060.

The previous prime is 12021210059. The next prime is 12021210167. The reversal of 12021210122 is 22101212021.

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

It can be written as a sum of positive squares in only one way, i.e., 8727483241 + 3293726881 = 93421^2 + 57391^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12021210097 and 12021210106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005302529 + ... + 3005302532.

Almost surely, 212021210122 is an apocalyptic number.

12021210122 is a deficient number, since it is larger than the sum of its proper divisors (6010605064).

12021210122 is an equidigital number, since it uses as much as digits as its factorization.

12021210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6010605063.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12021210122 its reverse (22101212021), we get a palindrome (34122422143).

The spelling of 12021210122 in words is "twelve billion, twenty-one million, two hundred ten thousand, one hundred twenty-two".

Divisors: 1 2 6010605061 12021210122