1021001000011 has 4 divisors (see below), whose sum is σ = 1021021872624. Its totient is φ = 1020980127400.

The previous prime is 1021000999973. The next prime is 1021001000017. The reversal of 1021001000011 is 1100001001201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021001000011 - 2¹³ = 1021000991819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021000999958 and 1021001000003.

It is not an unprimeable number, because it can be changed into a prime (1021001000017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10362760 + ... + 10460821.

It is an arithmetic number, because the mean of its divisors is an integer number (255255468156).

Almost surely, 2^{1021001000011} is an apocalyptic number.

1021001000011 is a deficient number, since it is larger than the sum of its proper divisors (20872613).

1021001000011 is an equidigital number, since it uses as much as digits as its factorization.

1021001000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20872612.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1021001000011 its reverse (1100001001201), we get a palindrome (2121002001212).

The spelling of 1021001000011 in words is "one trillion, twenty-one billion, one million, eleven", and thus it is an aban number and an uban number.