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4431211102121 = 30706714430763
BaseRepresentation
bin100000001111011100011…
…0000110111111110101001
3120200121201201110100002012
41000132320300313332221
51040100110020231441
613231400440245305
7635100353621006
oct100367060677651
916617651410065
104431211102121
1114592a2166a41
125b696b770835
13261b276ac72b
1411468672a8ad
157a3ec9ac9eb
hex407b8c37fa9

4431211102121 has 4 divisors (see below), whose sum is σ = 4431225839952. Its totient is φ = 4431196364292.

The previous prime is 4431211102091. The next prime is 4431211102147. The reversal of 4431211102121 is 1212011121344.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-4431211102121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4431211102181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6908315 + ... + 7522448.

It is an arithmetic number, because the mean of its divisors is an integer number (1107806459988).

Almost surely, 24431211102121 is an apocalyptic number.

It is an amenable number.

4431211102121 is a deficient number, since it is larger than the sum of its proper divisors (14737831).

4431211102121 is a wasteful number, since it uses less digits than its factorization.

4431211102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14737830.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 4431211102121 its reverse (1212011121344), we get a palindrome (5643222223465).

The spelling of 4431211102121 in words is "four trillion, four hundred thirty-one billion, two hundred eleven million, one hundred two thousand, one hundred twenty-one".

Divisors: 1 307067 14430763 4431211102121