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102021310211 = 331308221481
BaseRepresentation
bin101111100000011110…
…0011010011100000011
3100202100001002112120212
41133000330122130003
53132414423411321
6114511250424335
710241116554122
oct1370074323403
9322301075525
10102021310211
113a2a3408407
12179328920ab
13980b5086a2
144d1b6a5ab9
1529c190b55b
hex17c0f1a703

102021310211 has 4 divisors (see below), whose sum is σ = 102329532024. Its totient is φ = 101713088400.

The previous prime is 102021310133. The next prime is 102021310229. The reversal of 102021310211 is 112013120201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112013120201 = 195895427379.

It is a cyclic number.

It is not a de Polignac number, because 102021310211 - 214 = 102021293827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021310271) 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, 154110410 + ... + 154111071.

It is an arithmetic number, because the mean of its divisors is an integer number (25582383006).

Almost surely, 2102021310211 is an apocalyptic number.

102021310211 is a deficient number, since it is larger than the sum of its proper divisors (308221813).

102021310211 is an equidigital number, since it uses as much as digits as its factorization.

102021310211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308221812.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 102021310211 its reverse (112013120201), we get a palindrome (214034430412).

The spelling of 102021310211 in words is "one hundred two billion, twenty-one million, three hundred ten thousand, two hundred eleven".

Divisors: 1 331 308221481 102021310211