1201330101 has 4 divisors (see below), whose sum is σ = 1601773472. Its totient is φ = 800886732.

The previous prime is 1201330069. The next prime is 1201330103. The reversal of 1201330101 is 1010331021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1201330101 - 2⁵ = 1201330069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201330103) 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 in 3 ways as a sum of consecutive naturals, for example, 200221681 + ... + 200221686.

It is an arithmetic number, because the mean of its divisors is an integer number (400443368).

Almost surely, 2^1201330101 is an apocalyptic number.

It is an amenable number.

1201330101 is a deficient number, since it is larger than the sum of its proper divisors (400443371).

1201330101 is an equidigital number, since it uses as much as digits as its factorization.

1201330101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400443370.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1201330101 is about 34660.2091886359. The cubic root of 1201330101 is about 1063.0510473266.

Adding to 1201330101 its reverse (1010331021), we get a palindrome (2211661122).

The spelling of 1201330101 in words is "one billion, two hundred one million, three hundred thirty thousand, one hundred one".