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2012213111 = 29257269987
BaseRepresentation
bin111011111101111…
…1110111101110111
312012020100000110112
41313323332331313
513110111304421
6531400413235
7100602346346
oct16773767567
95166300415
102012213111
11942929547
12481a7721b
13260b6235c
14151357b5d
15bb9c645b
hex77efef77

2012213111 has 8 divisors (see below), whose sum is σ = 2089707120. Its totient is φ = 1935259648.

The previous prime is 2012213101. The next prime is 2012213173. The reversal of 2012213111 is 1113122102.

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 2012213111 - 210 = 2012212087 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 (2012213101) 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, 127541 + ... + 142446.

It is an arithmetic number, because the mean of its divisors is an integer number (261213390).

Almost surely, 22012213111 is an apocalyptic number.

2012213111 is a deficient number, since it is larger than the sum of its proper divisors (77494009).

2012213111 is a wasteful number, since it uses less digits than its factorization.

2012213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270273.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2012213111 is about 44857.6984585701. The cubic root of 2012213111 is about 1262.4804398629.

Adding to 2012213111 its reverse (1113122102), we get a palindrome (3125335213).

It can be divided in two parts, 20122 and 13111, that added together give a palindrome (33233).

The spelling of 2012213111 in words is "two billion, twelve million, two hundred thirteen thousand, one hundred eleven".

Divisors: 1 29 257 7453 269987 7829623 69386659 2012213111