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22013223401 = 132969778369
BaseRepresentation
bin10100100000000101…
…110010000111101001
32002211010202121120102
4110200011302013221
5330040341122101
614040203435145
71406336211611
oct244005620751
962733677512
1022013223401
119376988614
124324225ab5
1320ca801aa0
1410cb823a41
1588c89186b
hex5201721e9

22013223401 has 16 divisors (see below), whose sum is σ = 24530461200. Its totient is φ = 19614056448.

The previous prime is 22013223373. The next prime is 22013223437. The reversal of 22013223401 is 10432231022.

It can be written as a sum of positive squares in 8 ways, for example, as 1137308176 + 20875915225 = 33724^2 + 144485^2 .

It is a cyclic number.

It is not a de Polignac number, because 22013223401 - 234 = 4833354217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22013243401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2626145 + ... + 2634513.

It is an arithmetic number, because the mean of its divisors is an integer number (1533153825).

Almost surely, 222013223401 is an apocalyptic number.

It is an amenable number.

22013223401 is a deficient number, since it is larger than the sum of its proper divisors (2517237799).

22013223401 is a wasteful number, since it uses less digits than its factorization.

22013223401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15388.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22013223401 its reverse (10432231022), we get a palindrome (32445454423).

The spelling of 22013223401 in words is "twenty-two billion, thirteen million, two hundred twenty-three thousand, four hundred one".

Divisors: 1 13 29 377 6977 8369 90701 108797 202333 242701 2630329 3155113 58390513 759076669 1693324877 22013223401