1203120001 has 2 divisors, whose sum is σ = 1203120002. Its totient is φ = 1203120000.

The previous prime is 1203119999. The next prime is 1203120007. The reversal of 1203120001 is 1000213021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830822976 + 372297025 = 28824^2 + 19295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203120001 - 2¹ = 1203119999 is a prime.

Together with 1203119999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1203120001.

It is not a weakly prime, because it can be changed into another prime (1203120007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601560000 + 601560001.

It is an arithmetic number, because the mean of its divisors is an integer number (601560001).

Almost surely, 2^1203120001 is an apocalyptic number.

It is an amenable number.

1203120001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203120001 is an equidigital number, since it uses as much as digits as its factorization.

1203120001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1203120001 is about 34686.0202531222. The cubic root of 1203120001 is about 1063.5787432135.

Adding to 1203120001 its reverse (1000213021), we get a palindrome (2203333022).

The spelling of 1203120001 in words is "one billion, two hundred three million, one hundred twenty thousand, one".