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12520052241 = 3193118718217
BaseRepresentation
bin10111010100100000…
…01101011000010001
31012022112200112220120
423222100031120101
5201120113132431
65430204100453
7622154455014
oct135220153021
935275615816
1012520052241
115345274614
122514b34729
131246b1aa48
1486ab1337b
154d424a196
hex2ea40d611

12520052241 has 16 divisors (see below), whose sum is σ = 16794955584. Its totient is φ = 8296003584.

The previous prime is 12520052221. The next prime is 12520052257. The reversal of 12520052241 is 14225002521.

It is not a de Polignac number, because 12520052241 - 27 = 12520052113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12520052221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 678165 + ... + 696381.

It is an arithmetic number, because the mean of its divisors is an integer number (1049684724).

Almost surely, 212520052241 is an apocalyptic number.

It is an amenable number.

12520052241 is a deficient number, since it is larger than the sum of its proper divisors (4274903343).

12520052241 is a wasteful number, since it uses less digits than its factorization.

12520052241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19600.

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 12520052241 its reverse (14225002521), we get a palindrome (26745054762).

The spelling of 12520052241 in words is "twelve billion, five hundred twenty million, fifty-two thousand, two hundred forty-one".

Divisors: 1 3 193 579 1187 3561 18217 54651 229091 687273 3515881 10547643 21623579 64870737 4173350747 12520052241