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22190220231 = 328279261563
BaseRepresentation
bin10100101010101000…
…111110001111000111
32010021110210222120120
4110222220332033013
5330421144021411
614105525233023
71413615521424
oct245250761707
963243728516
1022190220231
119457889993
124373562773
132128393a3a
141107138d4b
1589d1a5106
hex52aa3e3c7

22190220231 has 8 divisors (see below), whose sum is σ = 29588119680. Its totient is φ = 14792900472.

The previous prime is 22190220191. The next prime is 22190220259. The reversal of 22190220231 is 13202209122.

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

It is not a de Polignac number, because 22190220231 - 213 = 22190212039 is a prime.

It is a super-2 number, since 2×221902202312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22190220131) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 45945 + ... + 215618.

It is an arithmetic number, because the mean of its divisors is an integer number (3698514960).

Almost surely, 222190220231 is an apocalyptic number.

22190220231 is a deficient number, since it is larger than the sum of its proper divisors (7397899449).

22190220231 is a wasteful number, since it uses less digits than its factorization.

22190220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289845.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 22190220231 its reverse (13202209122), we get a palindrome (35392429353).

The spelling of 22190220231 in words is "twenty-two billion, one hundred ninety million, two hundred twenty thousand, two hundred thirty-one".

Divisors: 1 3 28279 84837 261563 784689 7396740077 22190220231