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11112012212 = 2271938635407
BaseRepresentation
bin10100101100101001…
…11101100110110100
31001200102012201002212
422112110331212310
5140224133342322
65034344552552
7542236355030
oct122624754664
931612181085
1011112012212
114792494274
1221a1482758
1310811b5872
14775b0b1c0
154508180e2
hex29653d9b4

11112012212 has 48 divisors (see below), whose sum is σ = 23404093440. Its totient is φ = 4509641952.

The previous prime is 11112012203. The next prime is 11112012221. The reversal of 11112012212 is 21221021111.

It is an interprime number because it is at equal distance from previous prime (11112012203) and next prime (11112012221).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2052413 + ... + 2057819.

It is an arithmetic number, because the mean of its divisors is an integer number (487585280).

Almost surely, 211112012212 is an apocalyptic number.

It is an amenable number.

11112012212 is an abundant number, since it is smaller than the sum of its proper divisors (12292081228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11112012212 is a wasteful number, since it uses less digits than its factorization.

11112012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9300 (or 9298 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11112012212 its reverse (21221021111), we get a palindrome (32333033323).

The spelling of 11112012212 in words is "eleven billion, one hundred twelve million, twelve thousand, two hundred twelve".

Divisors: 1 2 4 7 14 19 28 38 76 133 266 532 3863 5407 7726 10814 15452 21628 27041 37849 54082 73397 75698 102733 108164 146794 151396 205466 293588 410932 513779 719131 1027558 1438262 2055116 2876524 20887241 41774482 83548964 146210687 292421374 396857579 584842748 793715158 1587430316 2778003053 5556006106 11112012212