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102122212211 = 821124387591
BaseRepresentation
bin101111100011011110…
…1010100101101110011
3100202121001221220002222
41133012331110231303
53133121241242321
6114525253231255
710243453324055
oct1370675245563
9322531856088
10102122212211
113a345365598
121796063252b
1398263a6906
144d2ac4d8d5
1529ca6dd3ab
hex17c6f54b73

102122212211 has 4 divisors (see below), whose sum is σ = 102246600624. Its totient is φ = 101997823800.

The previous prime is 102122212103. The next prime is 102122212219. The reversal of 102122212211 is 112212221201.

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 102122212211 - 218 = 102121950067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102122212211.

It is not an unprimeable number, because it can be changed into a prime (102122212219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62192975 + ... + 62194616.

It is an arithmetic number, because the mean of its divisors is an integer number (25561650156).

Almost surely, 2102122212211 is an apocalyptic number.

102122212211 is a deficient number, since it is larger than the sum of its proper divisors (124388413).

102122212211 is an equidigital number, since it uses as much as digits as its factorization.

102122212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124388412.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102122212211 its reverse (112212221201), we get a palindrome (214334433412).

The spelling of 102122212211 in words is "one hundred two billion, one hundred twenty-two million, two hundred twelve thousand, two hundred eleven".

Divisors: 1 821 124387591 102122212211