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11011221111021 = 33670407037007
BaseRepresentation
bin1010000000111011111111…
…1011000100000011101101
31102222122212221011011211220
42200032333323010003231
52420401440101023041
635230252442533553
72214351216100605
oct240167773040355
942878787134756
1011011221111021
11356591828978a
12129a06b8072b9
1361b47a0b7a11
142a0d35961c05
15141661872d66
hexa03bfec40ed

11011221111021 has 4 divisors (see below), whose sum is σ = 14681628148032. Its totient is φ = 7340814074012.

The previous prime is 11011221110987. The next prime is 11011221111041. The reversal of 11011221111021 is 12011112211011.

Adding to 11011221111021 its reverse (12011112211011), we get a palindrome (23022333322032).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11011221111021 - 27 = 11011221110893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011221111041) 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, 1835203518501 + ... + 1835203518506.

It is an arithmetic number, because the mean of its divisors is an integer number (3670407037008).

Almost surely, 211011221111021 is an apocalyptic number.

It is an amenable number.

11011221111021 is a deficient number, since it is larger than the sum of its proper divisors (3670407037011).

11011221111021 is an equidigital number, since it uses as much as digits as its factorization.

11011221111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670407037010.

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

The spelling of 11011221111021 in words is "eleven trillion, eleven billion, two hundred twenty-one million, one hundred eleven thousand, twenty-one".

Divisors: 1 3 3670407037007 11011221111021