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1201300221 = 31123309367
BaseRepresentation
bin100011110011010…
…0110001011111101
310002201110101002210
41013212212023331
54430013101341
6315112011033
741524612002
oct10746461375
93081411083
101201300221
11567114700
12296390a79
13161b5b244
14b578b8a9
15706e5c16
hex479a62fd

1201300221 has 12 divisors (see below), whose sum is σ = 1760583776. Its totient is φ = 728060520.

The previous prime is 1201300207. The next prime is 1201300231. The reversal of 1201300221 is 1220031021.

It is not a de Polignac number, because 1201300221 - 29 = 1201299709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201300197 and 1201300206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201300231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1654321 + ... + 1655046.

Almost surely, 21201300221 is an apocalyptic number.

1201300221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201300221 is a deficient number, since it is larger than the sum of its proper divisors (559283555).

1201300221 is a wasteful number, since it uses less digits than its factorization.

1201300221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309392 (or 3309381 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1201300221 is about 34659.7781441255. The cubic root of 1201300221 is about 1063.0422336990.

Adding to 1201300221 its reverse (1220031021), we get a palindrome (2421331242).

The spelling of 1201300221 in words is "one billion, two hundred one million, three hundred thousand, two hundred twenty-one".

Divisors: 1 3 11 33 121 363 3309367 9928101 36403037 109209111 400433407 1201300221