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1220030201 = 13157597761
BaseRepresentation
bin100100010111000…
…0010111011111001
310011000200221210202
41020232002323321
54444311431301
6321021251545
742143041235
oct11056027371
93130627722
101220030201
11576747825
122a0703bb5
131659b8580
14b80655c5
157219566b
hex48b82ef9

1220030201 has 8 divisors (see below), whose sum is σ = 1322249544. Its totient is φ = 1119006720.

The previous prime is 1220030191. The next prime is 1220030209. The reversal of 1220030201 is 1020300221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 167676601 + 1052353600 = 12949^2 + 32440^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220030201 - 26 = 1220030137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220030209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296840 + ... + 300921.

It is an arithmetic number, because the mean of its divisors is an integer number (165281193).

Almost surely, 21220030201 is an apocalyptic number.

It is an amenable number.

1220030201 is a deficient number, since it is larger than the sum of its proper divisors (102219343).

1220030201 is a wasteful number, since it uses less digits than its factorization.

1220030201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597931.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1220030201 is about 34928.9307165278. The cubic root of 1220030201 is about 1068.5385471981.

Adding to 1220030201 its reverse (1020300221), we get a palindrome (2240330422).

The spelling of 1220030201 in words is "one billion, two hundred twenty million, thirty thousand, two hundred one".

Divisors: 1 13 157 2041 597761 7770893 93848477 1220030201