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1121113021 = 7642124943
BaseRepresentation
bin100001011010010…
…1101001110111101
32220010120102221111
41002310231032331
54244001104041
6303125202021
736532206040
oct10264551675
92803512844
101121113021
11525925896
12273560311
1314b3638b2
14a8c76c57
1568656981
hex42d2d3bd

1121113021 has 8 divisors (see below), whose sum is σ = 1281522944. Its totient is φ = 960765840.

The previous prime is 1121113003. The next prime is 1121113033. The reversal of 1121113021 is 1203111211.

It is a happy number.

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 1121113021 - 27 = 1121112893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121112992 and 1121113010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121113051) by changing a digit.

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, 32476 + ... + 57418.

It is an arithmetic number, because the mean of its divisors is an integer number (160190368).

Almost surely, 21121113021 is an apocalyptic number.

It is an amenable number.

1121113021 is a deficient number, since it is larger than the sum of its proper divisors (160409923).

1121113021 is an equidigital number, since it uses as much as digits as its factorization.

1121113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31371.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1121113021 is about 33483.0258638612. The cubic root of 1121113021 is about 1038.8427157028.

Adding to 1121113021 its reverse (1203111211), we get a palindrome (2324224232).

The spelling of 1121113021 in words is "one billion, one hundred twenty-one million, one hundred thirteen thousand, twenty-one".

Divisors: 1 7 6421 24943 44947 174601 160159003 1121113021