1201442101 has 4 divisors (see below), whose sum is σ = 1202094432. Its totient is φ = 1200789772.

The previous prime is 1201442089. The next prime is 1201442111. The reversal of 1201442101 is 1012441021.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1201442101 - 2¹⁹ = 1200917813 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 (1201442111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323395 + ... + 327088.

It is an arithmetic number, because the mean of its divisors is an integer number (300523608).

Almost surely, 2^1201442101 is an apocalyptic number.

It is an amenable number.

1201442101 is a deficient number, since it is larger than the sum of its proper divisors (652331).

1201442101 is an equidigital number, since it uses as much as digits as its factorization.

1201442101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652330.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1201442101 is about 34661.8248365547. The cubic root of 1201442101 is about 1063.0840823815.

Adding to 1201442101 its reverse (1012441021), we get a palindrome (2213883122).

The spelling of 1201442101 in words is "one billion, two hundred one million, four hundred forty-two thousand, one hundred one".