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100222202221 is a prime number
BaseRepresentation
bin101110101010110110…
…1010111000101101101
3100120200122202101101121
41131111231113011231
53120223340432341
6114012541340541
710145412443251
oct1352555270555
9316618671347
10100222202221
113955a9029a9
1217510267751
1395b286b64b
144bca782261
1529189cc4d1
hex1755b5716d

100222202221 has 2 divisors, whose sum is σ = 100222202222. Its totient is φ = 100222202220.

The previous prime is 100222202183. The next prime is 100222202239. The reversal of 100222202221 is 122202222001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75451849225 + 24770352996 = 274685^2 + 157386^2 .

It is a cyclic number.

It is not a de Polignac number, because 100222202221 - 217 = 100222071149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100222202195 and 100222202204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100222202281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50111101110 + 50111101111.

It is an arithmetic number, because the mean of its divisors is an integer number (50111101111).

Almost surely, 2100222202221 is an apocalyptic number.

It is an amenable number.

100222202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100222202221 is an equidigital number, since it uses as much as digits as its factorization.

100222202221 is an evil number, because the sum of its binary digits is even.

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

Adding to 100222202221 its reverse (122202222001), we get a palindrome (222424424222).

The spelling of 100222202221 in words is "one hundred billion, two hundred twenty-two million, two hundred two thousand, two hundred twenty-one".