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13212701 = 41322261
BaseRepresentation
bin110010011001…
…110000011101
3220212021102022
4302121300131
511340301301
61151105525
7220206665
oct62316035
926767368
1013212701
117504997
1245122a5
132977c88
141a7d1a5
15125ed1b
hexc99c1d

13212701 has 4 divisors (see below), whose sum is σ = 13535004. Its totient is φ = 12890400.

The previous prime is 13212697. The next prime is 13212707. The reversal of 13212701 is 10721231.

13212701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10721231 = 37289763.

It can be written as a sum of positive squares in 2 ways, for example, as 2805625 + 10407076 = 1675^2 + 3226^2 .

It is not a de Polignac number, because 13212701 - 22 = 13212697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13212701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161090 + ... + 161171.

It is an arithmetic number, because the mean of its divisors is an integer number (3383751).

Almost surely, 213212701 is an apocalyptic number.

It is an amenable number.

13212701 is a deficient number, since it is larger than the sum of its proper divisors (322303).

13212701 is an equidigital number, since it uses as much as digits as its factorization.

13212701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322302.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 13212701 is about 3634.9279222565. The cubic root of 13212701 is about 236.4089254754.

Adding to 13212701 its reverse (10721231), we get a palindrome (23933932).

The spelling of 13212701 in words is "thirteen million, two hundred twelve thousand, seven hundred one".

Divisors: 1 41 322261 13212701