1201100201009 has 4 divisors (see below), whose sum is σ = 1203203704560. Its totient is φ = 1198996697460.

The previous prime is 1201100200999. The next prime is 1201100201113. The reversal of 1201100201009 is 9001020011021.

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 1201100201009 - 2⁸ = 1201100200753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201100101009) 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, 1051750919 + ... + 1051752060.

It is an arithmetic number, because the mean of its divisors is an integer number (300800926140).

Almost surely, 2^{1201100201009} is an apocalyptic number.

It is an amenable number.

1201100201009 is a deficient number, since it is larger than the sum of its proper divisors (2103503551).

1201100201009 is an equidigital number, since it uses as much as digits as its factorization.

1201100201009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103503550.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 1201100201009 in words is "one trillion, two hundred one billion, one hundred million, two hundred one thousand, nine".