1001211021011 has 8 divisors (see below), whose sum is σ = 1045611857184. Its totient is φ = 956882678400.

The previous prime is 1001211020987. The next prime is 1001211021017. The reversal of 1001211021011 is 1101201121001.

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 1001211021011 - 2³⁴ = 984031151827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001211020983 and 1001211021001.

It is not an unprimeable number, because it can be changed into a prime (1001211021017) 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, 18095156 + ... + 18150401.

It is an arithmetic number, because the mean of its divisors is an integer number (130701482148).

Almost surely, 2^{1001211021011} is an apocalyptic number.

1001211021011 is a deficient number, since it is larger than the sum of its proper divisors (44400836173).

1001211021011 is a wasteful number, since it uses less digits than its factorization.

1001211021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36246781.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001211021011 its reverse (1101201121001), we get a palindrome (2102412142012).

The spelling of 1001211021011 in words is "one trillion, one billion, two hundred eleven million, twenty-one thousand, eleven".