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130210076221 = 149873893129
BaseRepresentation
bin111100101000100100…
…0000001011000111101
3110110002120020020000121
41321101020001120331
54113132234414341
6135452341454541
712256504246321
oct1712110013075
9413076206017
10130210076221
1150249214545
122129b111451
13c3815792a4
146433351981
1535c150d4d1
hex1e5120163d

130210076221 has 4 divisors (see below), whose sum is σ = 131083969500. Its totient is φ = 129336182944.

The previous prime is 130210076177. The next prime is 130210076231. The reversal of 130210076221 is 122670012031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122670012031 = 717524287433.

It can be written as a sum of positive squares in 2 ways, for example, as 49475104900 + 80734971321 = 222430^2 + 284139^2 .

It is a cyclic number.

It is not a de Polignac number, because 130210076221 - 213 = 130210068029 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 (130210076231) 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, 436946416 + ... + 436946713.

It is an arithmetic number, because the mean of its divisors is an integer number (32770992375).

Almost surely, 2130210076221 is an apocalyptic number.

It is an amenable number.

130210076221 is a deficient number, since it is larger than the sum of its proper divisors (873893279).

130210076221 is an equidigital number, since it uses as much as digits as its factorization.

130210076221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873893278.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 130210076221 its reverse (122670012031), we get a palindrome (252880088252).

The spelling of 130210076221 in words is "one hundred thirty billion, two hundred ten million, seventy-six thousand, two hundred twenty-one".

Divisors: 1 149 873893129 130210076221