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BaseRepresentation
bin101101100001011110001010…
…010000100100010100100001
3222020220002201212012020111021
4231201132022100210110201
5202220234111321230141
61545452120230445441
760112566312365026
oct5541361220442441
9866802655166437
10200212220101921
11588805867a8a35
121a556577503881
138793c152177a1
143762474a5954d
151822ea525e6d1
hexb6178a424521

200212220101921 has 2 divisors, whose sum is σ = 200212220101922. Its totient is φ = 200212220101920.

The previous prime is 200212220101877. The next prime is 200212220102021. The reversal of 200212220101921 is 129101022212002.

Adding to 200212220101921 its reverse (129101022212002), we get a palindrome (329313242313923).

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200162508494400 + 49711607521 = 14147880^2 + 222961^2 .

It is a cyclic number.

It is not a de Polignac number, because 200212220101921 - 225 = 200212186547489 is a prime.

It is not a weakly prime, because it can be changed into another prime (200212220101721) 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 as a sum of consecutive naturals, namely, 100106110050960 + 100106110050961.

It is an arithmetic number, because the mean of its divisors is an integer number (100106110050961).

Almost surely, 2200212220101921 is an apocalyptic number.

It is an amenable number.

200212220101921 is a deficient number, since it is larger than the sum of its proper divisors (1).

200212220101921 is an equidigital number, since it uses as much as digits as its factorization.

200212220101921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 200212220101921 in words is "two hundred trillion, two hundred twelve billion, two hundred twenty million, one hundred one thousand, nine hundred twenty-one".