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2121200021212 = 221753035882353
BaseRepresentation
bin11110110111100001010…
…111111010111011011100
321111210012002001212002121
4132313201113322323130
5234223204201134322
64302244342032324
7306152212454416
oct36674127727334
97453162055077
102121200021212
11748661126678
122a31297186a4
1312504a24c75c
147494932d9b6
153a29d4c4ec7
hex1ede15faedc

2121200021212 has 24 divisors (see below), whose sum is σ = 3931200707616. Its totient is φ = 998023369728.

The previous prime is 2121200021147. The next prime is 2121200021219.

It is a happy number.

2121200021212 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121200021219) 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, 2580573 + ... + 3301780.

It is an arithmetic number, because the mean of its divisors is an integer number (163800029484).

Almost surely, 22121200021212 is an apocalyptic number.

It is an amenable number.

2121200021212 is a deficient number, since it is larger than the sum of its proper divisors (1810000686404).

2121200021212 is a wasteful number, since it uses less digits than its factorization.

2121200021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5887677 (or 5887675 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

It can be divided in two parts, 21212000 and 21212, that added together give a palindrome (21233212).

The spelling of 2121200021212 in words is "two trillion, one hundred twenty-one billion, two hundred million, twenty-one thousand, two hundred twelve".

Divisors: 1 2 4 17 34 68 5303 10606 21212 90151 180302 360604 5882353 11764706 23529412 100000001 200000002 400000004 31194117959 62388235918 124776471836 530300005303 1060600010606 2121200021212