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21210231023122 = 2233105143306867
BaseRepresentation
bin1001101001010011001000…
…10010010010011000010010
32210002200022110122102220111
410310221210102102120102
510240002023120214442
6113035502353031534
74316250204003451
oct464514422223022
983080273572814
1021210231023122
116838232510239
1224668275555aa
13bab1683b5a7b
1453481b484b98
1526bad7d65b17
hex134a64492612

21210231023122 has 16 divisors (see below), whose sum is σ = 31982295245472. Its totient is φ = 10549552557600.

The previous prime is 21210231023087. The next prime is 21210231023141. The reversal of 21210231023122 is 22132013201212.

It is a junction number, because it is equal to n+sod(n) for n = 21210231023093 and 21210231023102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21163668 + ... + 22143199.

It is an arithmetic number, because the mean of its divisors is an integer number (1998893452842).

Almost surely, 221210231023122 is an apocalyptic number.

21210231023122 is a deficient number, since it is larger than the sum of its proper divisors (10772064222350).

21210231023122 is a wasteful number, since it uses less digits than its factorization.

21210231023122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43308153.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21210231023122 its reverse (22132013201212), we get a palindrome (43342244224334).

The spelling of 21210231023122 in words is "twenty-one trillion, two hundred ten billion, two hundred thirty-one million, twenty-three thousand, one hundred twenty-two".

Divisors: 1 2 233 466 1051 2102 244883 489766 43306867 86613734 10090500011 20181000022 45515517217 91031034434 10605115511561 21210231023122