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10012011211 = 20521487891
BaseRepresentation
bin10010101001100001…
…10010101011001011
3221211202100212102001
421110300302223023
5131001033324321
64333252051431
7503051456026
oct112460625313
927752325361
1010012011211
114278579234
121b35003b77
13c373345b7
146ad9ac1bd
153d8e81c91
hex254c32acb

10012011211 has 4 divisors (see below), whose sum is σ = 10012519624. Its totient is φ = 10011502800.

The previous prime is 10012011179. The next prime is 10012011223. The reversal of 10012011211 is 11211021001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11211021001 = 64271744363.

It is a cyclic number.

It is not a de Polignac number, because 10012011211 - 25 = 10012011179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10012011281) 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, 223425 + ... + 264466.

It is an arithmetic number, because the mean of its divisors is an integer number (2503129906).

Almost surely, 210012011211 is an apocalyptic number.

10012011211 is a deficient number, since it is larger than the sum of its proper divisors (508413).

10012011211 is an equidigital number, since it uses as much as digits as its factorization.

10012011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508412.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10012011211 its reverse (11211021001), we get a palindrome (21223032212).

The spelling of 10012011211 in words is "ten billion, twelve million, eleven thousand, two hundred eleven".

Divisors: 1 20521 487891 10012011211