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21227104413 = 324391160209
BaseRepresentation
bin10011110001001110…
…111110100010011101
32000210100112122001100
4103301032332202131
5321433114320123
613430202303313
71351012260534
oct236116764235
960710478040
1021227104413
1190031687a9
124144ab7b39
13200399c118
14105526d31b
1584385c643
hex4f13be89d

21227104413 has 24 divisors (see below), whose sum is σ = 31409389440. Its totient is φ = 13806898560.

The previous prime is 21227104357. The next prime is 21227104427. The reversal of 21227104413 is 31440172212.

21227104413 is a `hidden beast` number, since 21 + 227 + 1 + 0 + 4 + 413 = 666.

It is not a de Polignac number, because 21227104413 - 221 = 21225007261 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21227104433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322453 + ... + 382661.

It is an arithmetic number, because the mean of its divisors is an integer number (1308724560).

Almost surely, 221227104413 is an apocalyptic number.

It is an amenable number.

21227104413 is a deficient number, since it is larger than the sum of its proper divisors (10182285027).

21227104413 is a wasteful number, since it uses less digits than its factorization.

21227104413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61169 (or 61166 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 21227104413 its reverse (31440172212), we get a palindrome (52667276625).

The spelling of 21227104413 in words is "twenty-one billion, two hundred twenty-seven million, one hundred four thousand, four hundred thirteen".

Divisors: 1 3 9 43 129 387 911 2733 8199 39173 60209 117519 180627 352557 541881 2588987 7766961 23300883 54850399 164551197 493653591 2358567157 7075701471 21227104413