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12102221441 = 157501115383
BaseRepresentation
bin10110100010101100…
…10011111010000001
31011020102110112210202
423101112103322001
5144241132041231
65320520334545
7605622120302
oct132126237201
934212415722
1012102221441
115150430102
122419014455
1311ab3a549b
1482b42a7a9
154ac7135cb
hex2d1593e81

12102221441 has 8 divisors (see below), whose sum is σ = 12182528064. Its totient is φ = 12021955920.

The previous prime is 12102221381. The next prime is 12102221459. The reversal of 12102221441 is 14412220121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12102221441 - 214 = 12102205057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102221141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779036 + ... + 794418.

It is an arithmetic number, because the mean of its divisors is an integer number (1522816008).

Almost surely, 212102221441 is an apocalyptic number.

It is an amenable number.

12102221441 is a deficient number, since it is larger than the sum of its proper divisors (80306623).

12102221441 is a wasteful number, since it uses less digits than its factorization.

12102221441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20551.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12102221441 its reverse (14412220121), we get a palindrome (26514441562).

The spelling of 12102221441 in words is "twelve billion, one hundred two million, two hundred twenty-one thousand, four hundred forty-one".

Divisors: 1 157 5011 15383 786727 2415131 77084213 12102221441