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101230230221 = 235143058371
BaseRepresentation
bin101111001000111001…
…0101011101011001101
3100200021220112111211222
41132101302223223031
53124304414331341
6114300551053125
710212402521351
oct1362162535315
9320256474758
10101230230221
1139a2790a29a
12177519711a5
139713659913
144c845bd461
15297724744b
hex1791cabacd

101230230221 has 4 divisors (see below), whose sum is σ = 101273290944. Its totient is φ = 101187169500.

The previous prime is 101230230149. The next prime is 101230230247. The reversal of 101230230221 is 122032032101.

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 not a de Polignac number, because 101230230221 - 226 = 101163121357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101230230221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101230230251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21526835 + ... + 21531536.

It is an arithmetic number, because the mean of its divisors is an integer number (25318322736).

Almost surely, 2101230230221 is an apocalyptic number.

It is an amenable number.

101230230221 is a deficient number, since it is larger than the sum of its proper divisors (43060723).

101230230221 is an equidigital number, since it uses as much as digits as its factorization.

101230230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43060722.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 101230230221 its reverse (122032032101), we get a palindrome (223262262322).

The spelling of 101230230221 in words is "one hundred one billion, two hundred thirty million, two hundred thirty thousand, two hundred twenty-one".

Divisors: 1 2351 43058371 101230230221