1001201211949 has 2 divisors, whose sum is σ = 1001201211950. Its totient is φ = 1001201211948.

The previous prime is 1001201211943. The next prime is 1001201212013. The reversal of 1001201211949 is 9491121021001.

1001201211949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731717714025 + 269483497924 = 855405^2 + 519118^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001201211949 - 2⁵ = 1001201211917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001201211949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001201211943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500600605974 + 500600605975.

It is an arithmetic number, because the mean of its divisors is an integer number (500600605975).

Almost surely, 2^{1001201211949} is an apocalyptic number.

It is an amenable number.

1001201211949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001201211949 is an equidigital number, since it uses as much as digits as its factorization.

1001201211949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 1001201211949 in words is "one trillion, one billion, two hundred one million, two hundred eleven thousand, nine hundred forty-nine".