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22122220201 = 191359185669
BaseRepresentation
bin10100100110100101…
…100100101010101001
32010002201212020001221
4110212211210222221
5330301242021301
614055055542041
71412131524544
oct244645445251
963081766057
1022122220201
119422464514
12435482a921
132117275633
1410dc0b785b
15897221da1
hex526964aa9

22122220201 has 8 divisors (see below), whose sum is σ = 23288532800. Its totient is φ = 20956106160.

The previous prime is 22122220151. The next prime is 22122220223. The reversal of 22122220201 is 10202222122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22122220201 - 213 = 22122212009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122220231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215395 + ... + 301063.

It is an arithmetic number, because the mean of its divisors is an integer number (2911066600).

Almost surely, 222122220201 is an apocalyptic number.

It is an amenable number.

22122220201 is a deficient number, since it is larger than the sum of its proper divisors (1166312599).

22122220201 is a wasteful number, since it uses less digits than its factorization.

22122220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99279.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22122220201 its reverse (10202222122), we get a palindrome (32324442323).

The spelling of 22122220201 in words is "twenty-two billion, one hundred twenty-two million, two hundred twenty thousand, two hundred one".

Divisors: 1 19 13591 85669 258229 1627711 1164327379 22122220201