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12101010100121 = 291572657810257
BaseRepresentation
bin1011000000010111110001…
…1010001000111110011001
31120211211211012101211220202
42300011330122020332121
53041230332041200441
641423043255031545
72356161211466225
oct260057432107631
946754735354822
1012101010100121
113946011802098
12143530b96b5b5
1369a1745647b7
142db998c59785
1515eb95b8419b
hexb017c688f99

12101010100121 has 8 divisors (see below), whose sum is σ = 12598020622920. Its totient is φ = 11609315198208.

The previous prime is 12101010100117. The next prime is 12101010100171. The reversal of 12101010100121 is 12100101010121.

Adding to 12101010100121 its reverse (12100101010121), we get a palindrome (24201111110242).

It can be written as a sum of positive squares in 4 ways, for example, as 1006281834496 + 11094728265625 = 1003136^2 + 3330875^2 .

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 12101010100121 - 22 = 12101010100117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101010100171) 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, 1328900576 + ... + 1328909681.

It is an arithmetic number, because the mean of its divisors is an integer number (1574752577865).

Almost surely, 212101010100121 is an apocalyptic number.

It is an amenable number.

12101010100121 is a deficient number, since it is larger than the sum of its proper divisors (497010522799).

12101010100121 is a wasteful number, since it uses less digits than its factorization.

12101010100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657810443.

The product of its (nonzero) digits is 4, while the sum is 11.

The spelling of 12101010100121 in words is "twelve trillion, one hundred one billion, ten million, one hundred thousand, one hundred twenty-one".