1201012211009 has 8 divisors (see below), whose sum is σ = 1305485596800. Its totient is φ = 1098265658256.

The previous prime is 1201012210973. The next prime is 1201012211081. The reversal of 1201012211009 is 9001122101021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201012211009 - 2¹² = 1201012206913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201012211099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431706809 + ... + 431709590.

It is an arithmetic number, because the mean of its divisors is an integer number (163185699600).

Almost surely, 2^{1201012211009} is an apocalyptic number.

It is an amenable number.

1201012211009 is a deficient number, since it is larger than the sum of its proper divisors (104473385791).

1201012211009 is a wasteful number, since it uses less digits than its factorization.

1201012211009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863416519.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1201012211009 in words is "one trillion, two hundred one billion, twelve million, two hundred eleven thousand, nine".