1205061001 has 2 divisors, whose sum is σ = 1205061002. Its totient is φ = 1205061000.

The previous prime is 1205060999. The next prime is 1205061007. The reversal of 1205061001 is 1001605021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1204020601 + 1040400 = 34699^2 + 1020^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205061001 - 2¹ = 1205060999 is a prime.

It is a super-2 number, since 2×1205061001² = 2904344032262244002, which contains 22 as substring.

Together with 1205060999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1205061007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602530500 + 602530501.

It is an arithmetic number, because the mean of its divisors is an integer number (602530501).

Almost surely, 2^1205061001 is an apocalyptic number.

It is an amenable number.

1205061001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205061001 is an equidigital number, since it uses as much as digits as its factorization.

1205061001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1205061001 is about 34713.9885492866. The cubic root of 1205061001 is about 1064.1503950189.

Adding to 1205061001 its reverse (1001605021), we get a palindrome (2206666022).

The spelling of 1205061001 in words is "one billion, two hundred five million, sixty-one thousand, one".