1001200001211 has 12 divisors (see below), whose sum is σ = 1463601609288. Its totient is φ = 659424899904.

The previous prime is 1001200001173. The next prime is 1001200001213. The reversal of 1001200001211 is 1121000021001.

It is a happy number.

1001200001211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1001200001211 - 2¹⁵ = 1001199968443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1001200001193 and 1001200001202.

It is not an unprimeable number, because it can be changed into a prime (1001200001213) 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, 670146510 + ... + 670148003.

It is an arithmetic number, because the mean of its divisors is an integer number (121966800774).

Almost surely, 2^{1001200001211} is an apocalyptic number.

1001200001211 is a deficient number, since it is larger than the sum of its proper divisors (462401608077).

1001200001211 is a wasteful number, since it uses less digits than its factorization.

1001200001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340294602 (or 1340294599 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1001200001211 its reverse (1121000021001), we get a palindrome (2122200022212).

The spelling of 1001200001211 in words is "one trillion, one billion, two hundred million, one thousand, two hundred eleven".