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212021121269 is a prime number
BaseRepresentation
bin1100010101110101110…
…0011001000011110101
3202021021010010220210002
43011131130121003311
511433204401340034
6241222352241045
721214036536536
oct3053534310365
9667233126702
10212021121269
1181a10439571
1235111540185
1316cbb96a599
14a39483a68d
1557ad9b7e7e
hex315d7190f5

212021121269 has 2 divisors, whose sum is σ = 212021121270. Its totient is φ = 212021121268.

The previous prime is 212021121227. The next prime is 212021121281. The reversal of 212021121269 is 962121120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206558433169 + 5462688100 = 454487^2 + 73910^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021121269 - 228 = 211752685813 is a prime.

It is a super-2 number, since 2×2120211212692 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021121869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010560634 + 106010560635.

It is an arithmetic number, because the mean of its divisors is an integer number (106010560635).

Almost surely, 2212021121269 is an apocalyptic number.

It is an amenable number.

212021121269 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021121269 is an equidigital number, since it uses as much as digits as its factorization.

212021121269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 212021121269 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, two hundred sixty-nine".