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21121002215416 = 2310126139854227
BaseRepresentation
bin1001100110101100111011…
…10101011001011111111000
32202210010222221220100201201
410303112131311121133320
510232021303031343131
6112530504322023544
74306641060442105
oct463263565313770
982703887810651
1021121002215416
116803404144354
122451484aa7bb4
13ba291829b2bc
14530394b73aac
15269614570761
hex13359dd597f8

21121002215416 has 16 divisors (see below), whose sum is σ = 39993976968840. Its totient is φ = 10455941690400.

The previous prime is 21121002215389. The next prime is 21121002215483. The reversal of 21121002215416 is 61451220012112.

It is a super-3 number, since 3×211210022154163 (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13069926306 + ... + 13069927921.

Almost surely, 221121002215416 is an apocalyptic number.

It is an amenable number.

21121002215416 is a deficient number, since it is larger than the sum of its proper divisors (18872974753424).

21121002215416 is a wasteful number, since it uses less digits than its factorization.

21121002215416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26139854334 (or 26139854330 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 21121002215416 its reverse (61451220012112), we get a palindrome (82572222227528).

The spelling of 21121002215416 in words is "twenty-one trillion, one hundred twenty-one billion, two million, two hundred fifteen thousand, four hundred sixteen".

Divisors: 1 2 4 8 101 202 404 808 26139854227 52279708454 104559416908 209118833816 2640125276927 5280250553854 10560501107708 21121002215416