10020021001011 has 48 divisors (see below), whose sum is σ = 17463232384000. Its totient is φ = 5408275993344.

The previous prime is 10020021001009. The next prime is 10020021001019. The reversal of 10020021001011 is 11010012002001.

It is a happy number.

It is not a de Polignac number, because 10020021001011 - 2¹ = 10020021001009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020021000984 and 10020021001002.

It is not an unprimeable number, because it can be changed into a prime (10020021001019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12016411 + ... + 12823188.

Almost surely, 2^{10020021001011} is an apocalyptic number.

10020021001011 is a deficient number, since it is larger than the sum of its proper divisors (7443211382989).

10020021001011 is a wasteful number, since it uses less digits than its factorization.

10020021001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24839968 (or 24839965 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10020021001011 its reverse (11010012002001), we get a palindrome (21030033003012).

The spelling of 10020021001011 in words is "ten trillion, twenty billion, twenty-one million, one thousand, eleven".