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12212053 = 71744579
BaseRepresentation
bin101110100101…
…011101010101
3211222102210021
4232211131111
511111241203
61113425141
7205541440
oct56453525
924872707
1012212053
116991107
12410b1b1
1326b7689
14189c657
1511135bd
hexba5755

12212053 has 4 divisors (see below), whose sum is σ = 13956640. Its totient is φ = 10467468.

The previous prime is 12212051. The next prime is 12212059. The reversal of 12212053 is 35021221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35021221 = 43814447.

It is a cyclic number.

It is not a de Polignac number, because 12212053 - 21 = 12212051 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212051) 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, 872283 + ... + 872296.

It is an arithmetic number, because the mean of its divisors is an integer number (3489160).

Almost surely, 212212053 is an apocalyptic number.

It is an amenable number.

12212053 is a deficient number, since it is larger than the sum of its proper divisors (1744587).

12212053 is an equidigital number, since it uses as much as digits as its factorization.

12212053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744586.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12212053 is about 3494.5747953077. The cubic root of 12212053 is about 230.2835381564.

Adding to 12212053 its reverse (35021221), we get a palindrome (47233274).

The spelling of 12212053 in words is "twelve million, two hundred twelve thousand, fifty-three".

Divisors: 1 7 1744579 12212053