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212112112111 is a prime number
BaseRepresentation
bin1100010110001011011…
…1011111100111101111
3202021111110100201202021
43011202313133213233
511433401200041421
6241235402411011
721216223130134
oct3054267374757
9667443321667
10212112112111
1181a57837309
1235137b00a67
1317004778513
14a3a296458b
1557b698d341
hex3162ddf9ef

212112112111 has 2 divisors, whose sum is σ = 212112112112. Its totient is φ = 212112112110.

The previous prime is 212112112061. The next prime is 212112112141. The reversal of 212112112111 is 111211211212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212112112111 - 29 = 212112111599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212112112141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106056056055 + 106056056056.

It is an arithmetic number, because the mean of its divisors is an integer number (106056056056).

Almost surely, 2212112112111 is an apocalyptic number.

212112112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212112112111 is an equidigital number, since it uses as much as digits as its factorization.

212112112111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212112112111 its reverse (111211211212), we get a palindrome (323323323323).

It can be divided in two parts, 21211211211 and 1, that added together give a palindrome (21211211212).

The spelling of 212112112111 in words is "two hundred twelve billion, one hundred twelve million, one hundred twelve thousand, one hundred eleven".