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2121010212021 = 35091481937883
BaseRepresentation
bin11110110111010110000…
…011110110110010110101
321111202200211220112211120
4132313112003312302311
5234222312103241041
64302213441454153
7306144416223021
oct36672603666265
97452624815746
102121010212021
11748573a74178
122a3096041359
13125019b22b1c
147492c041381
153a28b9d0366
hex1edd60f6cb5

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".

Divisors: 1 3 509 1481 1527 4443 753829 937883 2261487 2813649 477382447 1389004723 1432147341 4167014169 707003404007 2121010212021