1200211011001 has 12 divisors (see below), whose sum is σ = 1269284729904. Its totient is φ = 1134726075000.

The previous prime is 1200211010899. The next prime is 1200211011007. The reversal of 1200211011001 is 1001101120021.

It is not a de Polignac number, because 1200211011001 - 2⁹ = 1200211010489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200211011007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3208375 + ... + 3562876.

It is an arithmetic number, because the mean of its divisors is an integer number (105773727492).

Almost surely, 2^{1200211011001} is an apocalyptic number.

It is an amenable number.

1200211011001 is a deficient number, since it is larger than the sum of its proper divisors (69073718903).

1200211011001 is an equidigital number, since it uses as much as digits as its factorization.

1200211011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771780 (or 6771761 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1200211011001 its reverse (1001101120021), we get a palindrome (2201312131022).

The spelling of 1200211011001 in words is "one trillion, two hundred billion, two hundred eleven million, eleven thousand, one".