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11122212111 = 333911093307
BaseRepresentation
bin10100101101110111…
…10111110100001111
31001201010101220201220
422112323313310033
5140234241241421
65035351334423
7542422146243
oct122673676417
931633356656
1011122212111
11479822063a
1221a4981413
1310833473ca
14777204423
154516803c6
hex296ef7d0f

11122212111 has 8 divisors (see below), whose sum is σ = 14834002944. Its totient is φ = 7412614680.

The previous prime is 11122212109. The next prime is 11122212119. The reversal of 11122212111 is 11121222111.

It is a happy number.

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

It is not a de Polignac number, because 11122212111 - 21 = 11122212109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122212119) 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, 536481 + ... + 556826.

It is an arithmetic number, because the mean of its divisors is an integer number (1854250368).

Almost surely, 211122212111 is an apocalyptic number.

11122212111 is a deficient number, since it is larger than the sum of its proper divisors (3711790833).

11122212111 is a wasteful number, since it uses less digits than its factorization.

11122212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096701.

The product of its digits is 16, while the sum is 15.

Adding to 11122212111 its reverse (11121222111), we get a palindrome (22243434222).

The spelling of 11122212111 in words is "eleven billion, one hundred twenty-two million, two hundred twelve thousand, one hundred eleven".

Divisors: 1 3 3391 10173 1093307 3279921 3707404037 11122212111