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11212119993 = 37158698969
BaseRepresentation
bin10100111000100101…
…10101111110111001
31001221101120201011110
422130102311332321
5140430300314433
65052322350533
7544563306324
oct123422657671
931841521143
1011212119993
114833a49778
12220aabb449
131098b66439
147851297bb
154594de963
hex29c4b5fb9

11212119993 has 16 divisors (see below), whose sum is σ = 15164323200. Its totient is φ = 7367391360.

The previous prime is 11212119979. The next prime is 11212120033. The reversal of 11212119993 is 39991121211.

It is not a de Polignac number, because 11212119993 - 24 = 11212119977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11212119493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245613 + ... + 1254581.

It is an arithmetic number, because the mean of its divisors is an integer number (947770200).

Almost surely, 211212119993 is an apocalyptic number.

It is an amenable number.

11212119993 is a deficient number, since it is larger than the sum of its proper divisors (3952203207).

11212119993 is an equidigital number, since it uses as much as digits as its factorization.

11212119993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14912.

The product of its digits is 8748, while the sum is 39.

The spelling of 11212119993 in words is "eleven billion, two hundred twelve million, one hundred nineteen thousand, nine hundred ninety-three".

Divisors: 1 3 71 213 5869 8969 17607 26907 416699 636799 1250097 1910397 52639061 157917183 3737373331 11212119993