Search a number
-
+
121022100331231 = 1116529216656101
BaseRepresentation
bin11011100001000110100111…
…010011001101101011011111
3120212111121012020212121110211
4123201012213103031223133
5111330311230141044411
61105220441350113251
734330362315513601
oct3341064723155337
9525447166777424
10121022100331231
113561a203663060
12116a6a8864b827
13526b448275988
1421c57026d3171
15ded0e1218221
hex6e11a74cdadf

121022100331231 has 8 divisors (see below), whose sum is σ = 132024209160528. Its totient is φ = 110020008120000.

The previous prime is 121022100331213. The next prime is 121022100331261. The reversal of 121022100331231 is 132133001220121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121022100331231 - 25 = 121022100331199 is a prime.

It is a super-2 number, since 2×1210221003312312 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022100331201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14854081 + ... + 21510181.

It is an arithmetic number, because the mean of its divisors is an integer number (16503026145066).

Almost surely, 2121022100331231 is an apocalyptic number.

121022100331231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121022100331231 is a deficient number, since it is larger than the sum of its proper divisors (11002108829297).

121022100331231 is a wasteful number, since it uses less digits than its factorization.

121022100331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8309033.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 121022100331231 its reverse (132133001220121), we get a palindrome (253155101551352).

The spelling of 121022100331231 in words is "one hundred twenty-one trillion, twenty-two billion, one hundred million, three hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 11 1652921 6656101 18182131 73217111 11002009121021 121022100331231