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21221100021011 = 1131431822979393
BaseRepresentation
bin1001101001100111011000…
…01000001110010100010011
32210010201100221120202000212
410310303230020032110103
510240141303101133021
6113044501101234335
74320113432653112
oct464635410162423
983121327522025
1021221100021011
1168418aa802220
12246895b5629ab
13bac1ab133777
1453516cbb3c79
1526c02217985b
hex134cec20e513

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".

Divisors: 1 11 31 43 341 473 1333 14663 18229 79393 200519 565099 783847 873323 2461183 3413899 6216089 8622317 24299257 27073013 37552889 105830869 267291827 1164139559 1447254997 15919804967 44864904907 62231964871 493513953977 684551613581 1929190911001 21221100021011