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BaseRepresentation
bin1001101001000100000001…
…11101100101101111110110
32210001220101100110122122001
410310202000331211233312
510234333421240431402
6113032042004525514
74315542232112032
oct464420075455766
983056340418561
1021202122202102
116834851276a66
1224651439b089a
13baa47546111a
1453428c5711c2
1526b7b1022187
hex134880f65bf6

21202122202102 has 32 divisors (see below), whose sum is σ = 32650819970688. Its totient is φ = 10322599231296.

The previous prime is 21202122201979. The next prime is 21202122202111. The reversal of 21202122202102 is 20120222120212.

It is a self number, because there is not a number n which added to its sum of digits gives 21202122202102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4934593 + ... + 8170339.

It is an arithmetic number, because the mean of its divisors is an integer number (1020338124084).

Almost surely, 221202122202102 is an apocalyptic number.

21202122202102 is a deficient number, since it is larger than the sum of its proper divisors (11448697768586).

21202122202102 is a wasteful number, since it uses less digits than its factorization.

21202122202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236380.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21202122202102 its reverse (20120222120212), we get a palindrome (41322344322314).

The spelling of 21202122202102 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-two million, two hundred two thousand, one hundred two".