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12281085801 = 3212719953993
BaseRepresentation
bin10110111000000001…
…00111111101101001
31011200220000210120200
423130000213331221
5200122424221201
65350350142413
7613223335605
oct133400477551
934626023520
1012281085801
115232397596
122468ab1a09
13120946c49a
148470aa505
154bd295386
hex2dc027f69

12281085801 has 24 divisors (see below), whose sum is σ = 17969203200. Its totient is φ = 8081954496.

The previous prime is 12281085797. The next prime is 12281085871. The reversal of 12281085801 is 10858018221.

It is not a de Polignac number, because 12281085801 - 22 = 12281085797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12281085871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200461 + ... + 254453.

It is an arithmetic number, because the mean of its divisors is an integer number (748716800).

Almost surely, 212281085801 is an apocalyptic number.

It is an amenable number.

12281085801 is a deficient number, since it is larger than the sum of its proper divisors (5688117399).

12281085801 is a wasteful number, since it uses less digits than its factorization.

12281085801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54325 (or 54322 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 36.

The spelling of 12281085801 in words is "twelve billion, two hundred eighty-one million, eighty-five thousand, eight hundred one".

Divisors: 1 3 9 127 199 381 597 1143 1791 25273 53993 75819 161979 227457 485937 6857111 10744607 20571333 32233821 61713999 96701463 1364565089 4093695267 12281085801