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121332013 = 111672572
BaseRepresentation
bin1110011101101…
…10000100101101
322110022022020021
413032312010231
5222030111023
620012322141
73002206435
oct716660455
9273268207
10121332013
11625415a0
1234773351
131c1a22ba
14121852c5
15a9ba35d
hex73b612d

121332013 has 12 divisors (see below), whose sum is σ = 133674912. Its totient is φ = 109214720.

The previous prime is 121332011. The next prime is 121332019. The reversal of 121332013 is 310233121.

It is not a de Polignac number, because 121332013 - 21 = 121332011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121332011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471981 + ... + 472237.

It is an arithmetic number, because the mean of its divisors is an integer number (11139576).

Almost surely, 2121332013 is an apocalyptic number.

It is an amenable number.

121332013 is a deficient number, since it is larger than the sum of its proper divisors (12342899).

121332013 is an equidigital number, since it uses as much as digits as its factorization.

121332013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 121332013 is about 11015.0811617527. The cubic root of 121332013 is about 495.0607183281.

Adding to 121332013 its reverse (310233121), we get a palindrome (431565134).

The spelling of 121332013 in words is "one hundred twenty-one million, three hundred thirty-two thousand, thirteen".

Divisors: 1 11 167 257 1837 2827 42919 66049 472109 726539 11030183 121332013