1211001002011 has 8 divisors (see below), whose sum is σ = 1228093191648. Its totient is φ = 1193909808000.

The previous prime is 1211001001993. The next prime is 1211001002033. The reversal of 1211001002011 is 1102001001121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211001002011 - 2⁹ = 1211001001499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211001102011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2398131 + ... + 2858851.

It is an arithmetic number, because the mean of its divisors is an integer number (153511648956).

Almost surely, 2^{1211001002011} is an apocalyptic number.

1211001002011 is a deficient number, since it is larger than the sum of its proper divisors (17092189637).

1211001002011 is an equidigital number, since it uses as much as digits as its factorization.

1211001002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497813.

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

Adding to 1211001002011 its reverse (1102001001121), we get a palindrome (2313002003132).

The spelling of 1211001002011 in words is "one trillion, two hundred eleven billion, one million, two thousand, eleven".