1012021020011 has 4 divisors (see below), whose sum is σ = 1012023135672. Its totient is φ = 1012018904352.

The previous prime is 1012021019963. The next prime is 1012021020053. The reversal of 1012021020011 is 1100201202101.

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 1012021020011 - 2³⁸ = 737143113067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012021019974 and 1012021020001.

It is not an unprimeable number, because it can be changed into a prime (1012021020911) 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, 38291 + ... + 1423203.

It is an arithmetic number, because the mean of its divisors is an integer number (253005783918).

Almost surely, 2^{1012021020011} is an apocalyptic number.

1012021020011 is a deficient number, since it is larger than the sum of its proper divisors (2115661).

1012021020011 is an equidigital number, since it uses as much as digits as its factorization.

1012021020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115660.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1012021020011 its reverse (1100201202101), we get a palindrome (2112222222112).

The spelling of 1012021020011 in words is "one trillion, twelve billion, twenty-one million, twenty thousand, eleven".