1001211203009 has 2 divisors, whose sum is σ = 1001211203010. Its totient is φ = 1001211203008.

The previous prime is 1001211202883. The next prime is 1001211203023. The reversal of 1001211203009 is 9003021121001.

1001211203009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610004736784 + 391206466225 = 781028^2 + 625465^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001211203009 - 2¹² = 1001211198913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001211203099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500605601504 + 500605601505.

It is an arithmetic number, because the mean of its divisors is an integer number (500605601505).

Almost surely, 2^{1001211203009} is an apocalyptic number.

It is an amenable number.

1001211203009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001211203009 is an equidigital number, since it uses as much as digits as its factorization.

1001211203009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 1001211203009 in words is "one trillion, one billion, two hundred eleven million, two hundred three thousand, nine".