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102012011211111 = 3563237729278681
BaseRepresentation
bin10111001100011110000101…
…101100001110100101100111
3111101012020211110101010100120
4113030132011230032211213
5101332331044332223421
61000543400533413023
730326060510226441
oct2714360554164547
9441166743333316
10102012011211111
112a560061976711
12b53674019a173
1344bc8cac68a11
141b2959c99b491
15bbd876ed48c6
hex5cc785b0e967

102012011211111 has 32 divisors (see below), whose sum is σ = 136377209392128. Its totient is φ = 67827653752320.

The previous prime is 102012011211067. The next prime is 102012011211119. The reversal of 102012011211111 is 111112110210201.

It is not a de Polignac number, because 102012011211111 - 214 = 102012011194727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012011211119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11751177691 + ... + 11751186371.

It is an arithmetic number, because the mean of its divisors is an integer number (4261787793504).

Almost surely, 2102012011211111 is an apocalyptic number.

102012011211111 is a deficient number, since it is larger than the sum of its proper divisors (34365198181017).

102012011211111 is a wasteful number, since it uses less digits than its factorization.

102012011211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14551.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 102012011211111 its reverse (111112110210201), we get a palindrome (213124121421312).

The spelling of 102012011211111 in words is "one hundred two trillion, twelve billion, eleven million, two hundred eleven thousand, one hundred eleven".

Divisors: 1 3 563 1689 2377 2927 7131 8681 8781 26043 1338251 1647901 4014753 4887403 4943703 6957479 14662209 20634737 20872437 25409287 61904211 76227861 3917060677 11617356931 11751182031 14305428581 34852070793 42916285743 60397875199 181193625597 34004003737037 102012011211111