1000021020011 has 32 divisors (see below), whose sum is σ = 1183656499200. Its totient is φ = 836072778240.

The previous prime is 1000021020001. The next prime is 1000021020041. The reversal of 1000021020011 is 1100201200001.

It is a cyclic number.

It is not a de Polignac number, because 1000021020011 - 2³⁰ = 998947278187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000021020001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 818600 + ... + 1634058.

It is an arithmetic number, because the mean of its divisors is an integer number (36989265600).

Almost surely, 2^{1000021020011} is an apocalyptic number.

1000021020011 is a deficient number, since it is larger than the sum of its proper divisors (183635479189).

1000021020011 is a wasteful number, since it uses less digits than its factorization.

1000021020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815699.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1000021020011 its reverse (1100201200001), we get a palindrome (2100222220012).

The spelling of 1000021020011 in words is "one trillion, twenty-one million, twenty thousand, eleven".