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11212951189 = 117912903281
BaseRepresentation
bin10100111000101100…
…00000111010010101
31001221110010221100111
422130112000322111
5140431003414224
65052352243021
7544603340536
oct123426007225
931843127314
1011212951189
114834467210
12220b240471
13109909787b
147852a468d
15459605d94
hex29c580e95

11212951189 has 8 divisors (see below), whose sum is σ = 12387150720. Its totient is φ = 10064558400.

The previous prime is 11212951187. The next prime is 11212951223. The reversal of 11212951189 is 98115921211.

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 11212951189 - 21 = 11212951187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212951187) 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, 6450772 + ... + 6452509.

It is an arithmetic number, because the mean of its divisors is an integer number (1548393840).

Almost surely, 211212951189 is an apocalyptic number.

It is an amenable number.

11212951189 is a deficient number, since it is larger than the sum of its proper divisors (1174199531).

11212951189 is a wasteful number, since it uses less digits than its factorization.

11212951189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12903371.

The product of its digits is 12960, while the sum is 40.

The spelling of 11212951189 in words is "eleven billion, two hundred twelve million, nine hundred fifty-one thousand, one hundred eighty-nine".

Divisors: 1 11 79 869 12903281 141936091 1019359199 11212951189