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2122211311 = 11238388187
BaseRepresentation
bin111111001111110…
…0101111111101111
312110220022111121221
41332133211333233
513321241230221
6550330204211
7103406332663
oct17637457757
95426274557
102122211311
11999a29850
124b2883667
1327a89694c
14161bcc8a3
15c64a3541
hex7e7e5fef

2122211311 has 8 divisors (see below), whose sum is σ = 2415798144. Its totient is φ = 1845400920.

The previous prime is 2122211281. The next prime is 2122211317. The reversal of 2122211311 is 1131122212.

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

It is not a de Polignac number, because 2122211311 - 223 = 2113822703 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 (2122211317) 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, 4193841 + ... + 4194346.

It is an arithmetic number, because the mean of its divisors is an integer number (301974768).

Almost surely, 22122211311 is an apocalyptic number.

2122211311 is a deficient number, since it is larger than the sum of its proper divisors (293586833).

2122211311 is a wasteful number, since it uses less digits than its factorization.

2122211311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8388221.

The product of its digits is 48, while the sum is 16.

The square root of 2122211311 is about 46067.4647772156. The cubic root of 2122211311 is about 1285.0781566113.

Adding to 2122211311 its reverse (1131122212), we get a palindrome (3253333523).

The spelling of 2122211311 in words is "two billion, one hundred twenty-two million, two hundred eleven thousand, three hundred eleven".

Divisors: 1 11 23 253 8388187 92270057 192928301 2122211311