1001201220109 has 4 divisors (see below), whose sum is σ = 1001574387616. Its totient is φ = 1000828052604.

The previous prime is 1001201220059. The next prime is 1001201220133. The reversal of 1001201220109 is 9010221021001.

It is a happy number.

1001201220109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1001201220109 - 2⁷ = 1001201219981 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 (1001201227109) 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, 186579729 + ... + 186585094.

It is an arithmetic number, because the mean of its divisors is an integer number (250393596904).

Almost surely, 2^{1001201220109} is an apocalyptic number.

It is an amenable number.

1001201220109 is a deficient number, since it is larger than the sum of its proper divisors (373167507).

1001201220109 is an equidigital number, since it uses as much as digits as its factorization.

1001201220109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373167506.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 1001201220109 in words is "one trillion, one billion, two hundred one million, two hundred twenty thousand, one hundred nine".