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21020200222 = 2721721159797
BaseRepresentation
bin10011100100111001…
…101100110100011110
32000020221012210212011
4103210321230310132
5321022132401342
613353451501434
71342620516400
oct234471546436
960227183764
1021020200222
118a0739a5aa
1240a775787a
131c9cb683c8
1410359b0b70
158305dc717
hex4e4e6cd1e

21020200222 has 48 divisors (see below), whose sum is σ = 39020347728. Its totient is φ = 8438411520.

The previous prime is 21020200219. The next prime is 21020200231. The reversal of 21020200222 is 22200202012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321628 + ... + 381424.

It is an arithmetic number, because the mean of its divisors is an integer number (812923911).

Almost surely, 221020200222 is an apocalyptic number.

21020200222 is a deficient number, since it is larger than the sum of its proper divisors (18000147506).

21020200222 is a wasteful number, since it uses less digits than its factorization.

21020200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60041 (or 60034 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 21020200222 its reverse (22200202012), we get a palindrome (43220402234).

The spelling of 21020200222 in words is "twenty-one billion, twenty million, two hundred thousand, two hundred twenty-two".

Divisors: 1 2 7 14 17 34 49 98 119 211 238 422 833 1477 1666 2954 3587 7174 10339 20678 25109 50218 59797 119594 175763 351526 418579 837158 1016549 2033098 2930053 5860106 7115843 12617167 14231686 25234334 49810901 88320169 99621802 176640338 214491839 428983678 618241183 1236482366 1501442873 3002885746 10510100111 21020200222