Base | Representation |
---|---|
bin | 11110110111010110000… |
… | …011110110110010110101 |
3 | 21111202200211220112211120 |
4 | 132313112003312302311 |
5 | 234222312103241041 |
6 | 4302213441454153 |
7 | 306144416223021 |
oct | 36672603666265 |
9 | 7452624815746 |
10 | 2121010212021 |
11 | 748573a74178 |
12 | 2a3096041359 |
13 | 125019b22b1c |
14 | 7492c041381 |
15 | 3a28b9d0366 |
hex | 1edd60f6cb5 |
2121010212021 has 16 divisors (see below), whose sum is σ = 2835485939520. Its totient is φ = 1410274405760.
The previous prime is 2121010212001. The next prime is 2121010212059. The reversal of 2121010212021 is 1202120101212.
It is a cyclic number.
It is not a de Polignac number, because 2121010212021 - 25 = 2121010211989 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2121010212001) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1792546 + ... + 2730428.
It is an arithmetic number, because the mean of its divisors is an integer number (177217871220).
Almost surely, 22121010212021 is an apocalyptic number.
It is an amenable number.
2121010212021 is a deficient number, since it is larger than the sum of its proper divisors (714475727499).
2121010212021 is a wasteful number, since it uses less digits than its factorization.
2121010212021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 939876.
The product of its (nonzero) digits is 32, while the sum is 15.
Adding to 2121010212021 its reverse (1202120101212), we get a palindrome (3323130313233).
The spelling of 2121010212021 in words is "two trillion, one hundred twenty-one billion, ten million, two hundred twelve thousand, twenty-one".
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