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21101100003 = 3218112953407
BaseRepresentation
bin10011101001101110…
…010011101111100011
32000110120102221111100
4103221232103233203
5321203340200003
613405501445443
71344622250664
oct235156235743
960416387440
1021101100003
118a49025825
12410a870883
131cb38521b9
14104262d36b
1583776cba3
hex4e9b93be3

21101100003 has 12 divisors (see below), whose sum is σ = 30647763328. Its totient is φ = 13989678480.

The previous prime is 21101099989. The next prime is 21101100061. The reversal of 21101100003 is 30000110112.

Adding to 21101100003 its reverse (30000110112), we get a palindrome (51101210115).

It can be divided in two parts, 21101 and 100003, that added together give a square (121104 = 3482).

It is not a de Polignac number, because 21101100003 - 26 = 21101099939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101100073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6475075 + ... + 6478332.

Almost surely, 221101100003 is an apocalyptic number.

21101100003 is a deficient number, since it is larger than the sum of its proper divisors (9546663325).

21101100003 is a wasteful number, since it uses less digits than its factorization.

21101100003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12953594 (or 12953591 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The spelling of 21101100003 in words is "twenty-one billion, one hundred one million, one hundred thousand, three".

Divisors: 1 3 9 181 543 1629 12953407 38860221 116580663 2344566667 7033700001 21101100003