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212222113231 = 1409150618959
BaseRepresentation
bin1100010110100101101…
…1000111010111001111
3202021210010100100220211
43011221123013113033
511434112330110411
6241254332223251
721222030125122
oct3055133072717
9667703310824
10212222113231
1182003939827
123516890ab27
13170214b123b
14a3b33da3b9
1557c146b221
hex31696c75cf

212222113231 has 4 divisors (see below), whose sum is σ = 212372733600. Its totient is φ = 212071492864.

The previous prime is 212222113219. The next prime is 212222113247. The reversal of 212222113231 is 132311222212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212222113231 - 215 = 212222080463 is a prime.

It is a super-3 number, since 3×2122221132313 (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222113531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75308071 + ... + 75310888.

It is an arithmetic number, because the mean of its divisors is an integer number (53093183400).

Almost surely, 2212222113231 is an apocalyptic number.

212222113231 is a deficient number, since it is larger than the sum of its proper divisors (150620369).

212222113231 is a wasteful number, since it uses less digits than its factorization.

212222113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150620368.

The product of its digits is 576, while the sum is 22.

Adding to 212222113231 its reverse (132311222212), we get a palindrome (344533335443).

The spelling of 212222113231 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred thirteen thousand, two hundred thirty-one".

Divisors: 1 1409 150618959 212222113231