1021201120009 has 16 divisors (see below), whose sum is σ = 1177279868032. Its totient is φ = 867702647808.

The previous prime is 1021201119997. The next prime is 1021201120067. The reversal of 1021201120009 is 9000211021201.

It is a happy number.

1021201120009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1021201120009 - 2¹³ = 1021201111817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021201123009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 953154 + ... + 1717819.

It is an arithmetic number, because the mean of its divisors is an integer number (73579991752).

Almost surely, 2^{1021201120009} is an apocalyptic number.

It is an amenable number.

1021201120009 is a deficient number, since it is larger than the sum of its proper divisors (156078748023).

1021201120009 is a wasteful number, since it uses less digits than its factorization.

1021201120009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671456.

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

The spelling of 1021201120009 in words is "one trillion, twenty-one billion, two hundred one million, one hundred twenty thousand, nine".