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102212012012 = 22112211181843
BaseRepresentation
bin101111100110001001…
…1111000011111101100
3100202211022221012021112
41133030103320133230
53133312233341022
6114542222051152
710245623524055
oct1371423703754
9322738835245
10102212012012
113a39101a500
1217986719ab8
13983bb886a6
144d38b4772c
1529d352a8e2
hex17cc4f87ec

102212012012 has 18 divisors (see below), whose sum is σ = 196610296764. Its totient is φ = 46460005240.

The previous prime is 102212012009. The next prime is 102212012017. The reversal of 102212012012 is 210210212201.

It is not an unprimeable number, because it can be changed into a prime (102212012017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105590438 + ... + 105591405.

Almost surely, 2102212012012 is an apocalyptic number.

It is an amenable number.

102212012012 is a deficient number, since it is larger than the sum of its proper divisors (94398284752).

102212012012 is a wasteful number, since it uses less digits than its factorization.

102212012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211181869 (or 211181856 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102212012012 its reverse (210210212201), we get a palindrome (312422224213).

The spelling of 102212012012 in words is "one hundred two billion, two hundred twelve million, twelve thousand, twelve".

Divisors: 1 2 4 11 22 44 121 242 484 211181843 422363686 844727372 2323000273 4646000546 9292001092 25553003003 51106006006 102212012012