Base | Representation |
---|---|
bin | 1001101001100111011000… |
… | …01000001110010100010011 |
3 | 2210010201100221120202000212 |
4 | 10310303230020032110103 |
5 | 10240141303101133021 |
6 | 113044501101234335 |
7 | 4320113432653112 |
oct | 464635410162423 |
9 | 83121327522025 |
10 | 21221100021011 |
11 | 68418aa802220 |
12 | 246895b5629ab |
13 | bac1ab133777 |
14 | 53516cbb3c79 |
15 | 26c02217985b |
hex | 134cec20e513 |
21221100021011 has 32 divisors (see below), whose sum is σ = 24454469867520. Its totient is φ = 18234182937600.
The previous prime is 21221100021001. The next prime is 21221100021067. The reversal of 21221100021011 is 11012000112212.
It is not a de Polignac number, because 21221100021011 - 26 = 21221100020947 is a prime.
It is a super-2 number, since 2×212211000210112 (a number of 27 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (21221100021001) 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, 267252131 + ... + 267331523.
It is an arithmetic number, because the mean of its divisors is an integer number (764202183360).
Almost surely, 221221100021011 is an apocalyptic number.
21221100021011 is a deficient number, since it is larger than the sum of its proper divisors (3233369846509).
21221100021011 is a wasteful number, since it uses less digits than its factorization.
21221100021011 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 97707.
The product of its (nonzero) digits is 16, while the sum is 14.
Adding to 21221100021011 its reverse (11012000112212), we get a palindrome (32233100133223).
The spelling of 21221100021011 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred million, twenty-one thousand, eleven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.073 sec. • engine limits •