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22231130213 = 29881870137
BaseRepresentation
bin10100101101000101…
…000010000001100101
32010101022210102112002
4110231011002001211
5331012132131323
614113550135045
71414623326465
oct245505020145
963338712462
1022231130213
119478991196
1243851b1485
1321339b8826
14110c747ba5
158a1a86828
hex52d142065

22231130213 has 8 divisors (see below), whose sum is σ = 23023851480. Its totient is φ = 21440151040.

The previous prime is 22231130113. The next prime is 22231130219. The reversal of 22231130213 is 31203113222.

It can be written as a sum of positive squares in 4 ways, for example, as 6880129 + 22224250084 = 2623^2 + 149078^2 .

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 22231130213 - 230 = 21157388389 is a prime.

It is a super-2 number, since 2×222311302132 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231130219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409520 + ... + 460617.

It is an arithmetic number, because the mean of its divisors is an integer number (2877981435).

Almost surely, 222231130213 is an apocalyptic number.

It is an amenable number.

22231130213 is a deficient number, since it is larger than the sum of its proper divisors (792721267).

22231130213 is an equidigital number, since it uses as much as digits as its factorization.

22231130213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871047.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22231130213 its reverse (31203113222), we get a palindrome (53434243435).

The spelling of 22231130213 in words is "twenty-two billion, two hundred thirty-one million, one hundred thirty thousand, two hundred thirteen".

Divisors: 1 29 881 25549 870137 25233973 766590697 22231130213