Search a number
-
+
111331229621 is a prime number
BaseRepresentation
bin110011110101111011…
…0111011111110110101
3101122100212100110002212
41213223312323332311
53311001243321441
6123051142343205
711020614560243
oct1475366737665
9348325313085
10111331229621
1143240638687
12196b072ab05
13a66324a741
145561d13793
152d68e05eeb
hex19ebdbbfb5

111331229621 has 2 divisors, whose sum is σ = 111331229622. Its totient is φ = 111331229620.

The previous prime is 111331229617. The next prime is 111331229623. The reversal of 111331229621 is 126922133111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60142167121 + 51189062500 = 245239^2 + 226250^2 .

It is a cyclic number.

It is not a de Polignac number, because 111331229621 - 22 = 111331229617 is a prime.

Together with 111331229623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111331229623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55665614810 + 55665614811.

It is an arithmetic number, because the mean of its divisors is an integer number (55665614811).

Almost surely, 2111331229621 is an apocalyptic number.

It is an amenable number.

111331229621 is a deficient number, since it is larger than the sum of its proper divisors (1).

111331229621 is an equidigital number, since it uses as much as digits as its factorization.

111331229621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 32.

The spelling of 111331229621 in words is "one hundred eleven billion, three hundred thirty-one million, two hundred twenty-nine thousand, six hundred twenty-one".