Search a number
-
+
1212013010 = 251353175909
BaseRepresentation
bin100100000111101…
…1101100111010010
310010110121122021202
41020033131213102
54440233404020
6320133351202
742014640425
oct11017354722
93113548252
101212013010
1157217134a
12299a98502
1316413c380
14b6d799bc
157160ee75
hex483dd9d2

1212013010 has 32 divisors (see below), whose sum is σ = 2393783280. Its totient is φ = 439066368.

The previous prime is 1212013009. The next prime is 1212013067. The reversal of 1212013010 is 103102121.

It can be written as a sum of positive squares in 8 ways, for example, as 81775849 + 1130237161 = 9043^2 + 33619^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1212012982 and 1212013000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81065 + ... + 94844.

Almost surely, 21212013010 is an apocalyptic number.

1212013010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212013010 is a deficient number, since it is larger than the sum of its proper divisors (1181770270).

1212013010 is a wasteful number, since it uses less digits than its factorization.

1212013010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175982.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1212013010 is about 34813.9772217999. The cubic root of 1212013010 is about 1066.1928371835.

Adding to 1212013010 its reverse (103102121), we get a palindrome (1315115131).

The spelling of 1212013010 in words is "one billion, two hundred twelve million, thirteen thousand, ten".

Divisors: 1 2 5 10 13 26 53 65 106 130 265 530 689 1378 3445 6890 175909 351818 879545 1759090 2286817 4573634 9323177 11434085 18646354 22868170 46615885 93231770 121201301 242402602 606006505 1212013010