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1204201213 is a prime number
BaseRepresentation
bin100011111000110…
…1010011011111101
310002220220202111221
41013301222123331
54431233414323
6315254113341
741561353465
oct10761523375
93086822457
101204201213
11568816216
1229734b851
131626357c7
14b5d04ba5
1570aba55d
hex47c6a6fd

1204201213 has 2 divisors, whose sum is σ = 1204201214. Its totient is φ = 1204201212.

The previous prime is 1204201157. The next prime is 1204201217. The reversal of 1204201213 is 3121024021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1057355289 + 146845924 = 32517^2 + 12118^2 .

It is an emirp because it is prime and its reverse (3121024021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1204201213 - 213 = 1204193021 is a prime.

It is a super-2 number, since 2×12042012132 = 2900201122781342738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204201217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602100606 + 602100607.

It is an arithmetic number, because the mean of its divisors is an integer number (602100607).

Almost surely, 21204201213 is an apocalyptic number.

It is an amenable number.

1204201213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204201213 is an equidigital number, since it uses as much as digits as its factorization.

1204201213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1204201213 is about 34701.6024557945. The cubic root of 1204201213 is about 1063.8972511466.

Adding to 1204201213 its reverse (3121024021), we get a palindrome (4325225234).

The spelling of 1204201213 in words is "one billion, two hundred four million, two hundred one thousand, two hundred thirteen".