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222020213 is a prime number
BaseRepresentation
bin11010011101111…
…00001001110101
3120110202210110212
431032330021311
5423314121323
634010355205
75334066152
oct1516741165
9513683425
10222020213
11104363088
126242bb05
1336cc710c
14216b5229
1514758b78
hexd3bc275

222020213 has 2 divisors, whose sum is σ = 222020214. Its totient is φ = 222020212.

The previous prime is 222020191. The next prime is 222020231. The reversal of 222020213 is 312020222.

Together with next prime (222020231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186104164 + 35916049 = 13642^2 + 5993^2 .

It is a cyclic number.

It is not a de Polignac number, because 222020213 - 212 = 222016117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222020243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010106 + 111010107.

It is an arithmetic number, because the mean of its divisors is an integer number (111010107).

Almost surely, 2222020213 is an apocalyptic number.

It is an amenable number.

222020213 is a deficient number, since it is larger than the sum of its proper divisors (1).

222020213 is an equidigital number, since it uses as much as digits as its factorization.

222020213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 222020213 is about 14900.3427141794. The cubic root of 222020213 is about 605.5232710760.

Adding to 222020213 its reverse (312020222), we get a palindrome (534040435).

Subtracting 222020213 from its reverse (312020222), we obtain a palindrome (90000009).

The spelling of 222020213 in words is "two hundred twenty-two million, twenty thousand, two hundred thirteen".