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2102122021211 = 3179858359339
BaseRepresentation
bin11110100101110000001…
…111001000000101011011
321102221221111110001001222
4132211300033020011123
5233420121214134321
64245411310202255
7304605354235232
oct36456017100533
97387844401058
102102122021211
11740561095923
1229b4a44b338b
131232c98a2064
1473a5968db19
1539a3367e3ab
hex1e9703c815b

2102122021211 has 8 divisors (see below), whose sum is σ = 2197399910400. Its totient is φ = 2008560850920.

The previous prime is 2102122021199. The next prime is 2102122021229. The reversal of 2102122021211 is 1121202212012.

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 2102122021211 - 230 = 2101048279387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102122021211.

It is not an unprimeable number, because it can be changed into a prime (2102122021711) 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, 429177221 + ... + 429182118.

It is an arithmetic number, because the mean of its divisors is an integer number (274674988800).

Almost surely, 22102122021211 is an apocalyptic number.

2102122021211 is a deficient number, since it is larger than the sum of its proper divisors (95277889189).

2102122021211 is an equidigital number, since it uses as much as digits as its factorization.

2102122021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858359449.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2102122021211 its reverse (1121202212012), we get a palindrome (3223324233223).

The spelling of 2102122021211 in words is "two trillion, one hundred two billion, one hundred twenty-two million, twenty-one thousand, two hundred eleven".

Divisors: 1 31 79 2449 858359339 26609139509 67810387781 2102122021211