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2011211112 = 233172289967
BaseRepresentation
bin111011111100000…
…1010010101101000
312012011110002222110
41313320022111220
513104332223422
6531323122320
7100561004151
oct16770122550
95164402873
102011211112
11942304749
124816733a0
132608a1261
14151176928
15bb87960c
hex77e0a568

2011211112 has 48 divisors (see below), whose sum is σ = 5341210560. Its totient is φ = 630966016.

The previous prime is 2011210997. The next prime is 2011211117. The reversal of 2011211112 is 2111121102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (2011211117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138048 + ... + 151919.

It is an arithmetic number, because the mean of its divisors is an integer number (111275220).

Almost surely, 22011211112 is an apocalyptic number.

It is an amenable number.

2011211112 is an abundant number, since it is smaller than the sum of its proper divisors (3329999448).

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

2011211112 is a wasteful number, since it uses less digits than its factorization.

2011211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290010 (or 289989 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2011211112 is about 44846.5284275160. The cubic root of 2011211112 is about 1262.2708507025.

Adding to 2011211112 its reverse (2111121102), we get a palindrome (4122332214).

The spelling of 2011211112 in words is "two billion, eleven million, two hundred eleven thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 289 408 578 867 1156 1734 2312 3468 6936 289967 579934 869901 1159868 1739802 2319736 3479604 4929439 6959208 9858878 14788317 19717756 29576634 39435512 59153268 83800463 118306536 167600926 251401389 335201852 502802778 670403704 1005605556 2011211112