1020202011021 has 16 divisors (see below), whose sum is σ = 1407181783040. Its totient is φ = 656773230960.

The previous prime is 1020202010999. The next prime is 1020202011067. The reversal of 1020202011021 is 1201102020201.

1020202011021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1020202011021 - 2²² = 1020197816717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020202010988 and 1020202011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020202011421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11803501 + ... + 11889618.

It is an arithmetic number, because the mean of its divisors is an integer number (87948861440).

Almost surely, 2^{1020202011021} is an apocalyptic number.

It is an amenable number.

1020202011021 is a deficient number, since it is larger than the sum of its proper divisors (386979772019).

1020202011021 is a wasteful number, since it uses less digits than its factorization.

1020202011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23693616.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1020202011021 its reverse (1201102020201), we get a palindrome (2221304031222).

The spelling of 1020202011021 in words is "one trillion, twenty billion, two hundred two million, eleven thousand, twenty-one".