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12101397 = 371152387
BaseRepresentation
bin101110001010…
…011100010101
3211202210222220
4232022130111
511044221042
61111212553
7204601020
oct56123425
924683886
1012101397
116915a60
124077159
1326791b9
1418701b7
1510e08ec
hexb8a715

12101397 has 16 divisors (see below), whose sum is σ = 20116992. Its totient is φ = 6286320.

The previous prime is 12101393. The next prime is 12101407. The reversal of 12101397 is 79310121.

12101397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12101397 - 22 = 12101393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101393) 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, 25963 + ... + 26424.

It is an arithmetic number, because the mean of its divisors is an integer number (1257312).

Almost surely, 212101397 is an apocalyptic number.

It is an amenable number.

12101397 is a deficient number, since it is larger than the sum of its proper divisors (8015595).

12101397 is a wasteful number, since it uses less digits than its factorization.

12101397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52408.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 12101397 is about 3478.7062250210. The cubic root of 12101397 is about 229.5858773642.

The spelling of 12101397 in words is "twelve million, one hundred one thousand, three hundred ninety-seven".

Divisors: 1 3 7 11 21 33 77 231 52387 157161 366709 576257 1100127 1728771 4033799 12101397