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21133242242 = 272673218587
BaseRepresentation
bin10011101011101000…
…111010111110000010
32000112210220221100122
4103223220322332002
5321240102222432
613413010420242
71345462411100
oct235350727602
960483827318
1021133242242
118a65189762
124119591682
131cba3c7288
1410469d8c70
1583a4bb612
hex4eba3af82

21133242242 has 24 divisors (see below), whose sum is σ = 37425741264. Its totient is φ = 8921920392.

The previous prime is 21133242223. The next prime is 21133242301. The reversal of 21133242242 is 24224233112.

Adding to 21133242242 its reverse (24224233112), we get a palindrome (45357475354).

It is a super-2 number, since 2×211332422422 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1602728 + ... + 1615859.

It is an arithmetic number, because the mean of its divisors is an integer number (1559405886).

Almost surely, 221133242242 is an apocalyptic number.

21133242242 is a deficient number, since it is larger than the sum of its proper divisors (16292499022).

21133242242 is a wasteful number, since it uses less digits than its factorization.

21133242242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218670 (or 3218663 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The spelling of 21133242242 in words is "twenty-one billion, one hundred thirty-three million, two hundred forty-two thousand, two hundred forty-two".

Divisors: 1 2 7 14 49 67 98 134 469 938 3283 6566 3218587 6437174 22530109 45060218 157710763 215645329 315421526 431290658 1509517303 3019034606 10566621121 21133242242