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212221200111121 = 449932350697523
BaseRepresentation
bin110000010000001110011001…
…001111110001011000010001
31000211102011000022202002002001
4300100032121033301120101
5210304013004212023441
62031205023505354001
762462322114261265
oct6020163117613021
91024364008662061
10212221200111121
116169056195a643
121b975a82638901
1391554b11a8486
143a597bd1280a5
15198056170d731
hexc103993f1611

212221200111121 has 8 divisors (see below), whose sum is σ = 212716671199200. Its totient is φ = 211725830437632.

The previous prime is 212221200111103. The next prime is 212221200111143. The reversal of 212221200111121 is 121111002122212.

It is a happy number.

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 212221200111121 - 211 = 212221200109073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212221200118121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21162735 + ... + 29534788.

It is an arithmetic number, because the mean of its divisors is an integer number (26589583899900).

Almost surely, 2212221200111121 is an apocalyptic number.

It is an amenable number.

212221200111121 is a deficient number, since it is larger than the sum of its proper divisors (495471088079).

212221200111121 is an equidigital number, since it uses as much as digits as its factorization.

212221200111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50707295.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212221200111121 its reverse (121111002122212), we get a palindrome (333332202233333).

The spelling of 212221200111121 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred million, one hundred eleven thousand, one hundred twenty-one".

Divisors: 1 449 9323 4186027 50697523 22763187827 472653006929 212221200111121