1010010202021 has 4 divisors (see below), whose sum is σ = 1011690752044. Its totient is φ = 1008329652000.

The previous prime is 1010010202009. The next prime is 1010010202031. The reversal of 1010010202021 is 1202020100101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 959398701121 + 50611500900 = 979489^2 + 224970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010010202021 - 2¹¹ = 1010010199973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010010201989 and 1010010202007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010010202031) 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, 840274110 + ... + 840275311.

It is an arithmetic number, because the mean of its divisors is an integer number (252922688011).

Almost surely, 2^{1010010202021} is an apocalyptic number.

It is an amenable number.

1010010202021 is a deficient number, since it is larger than the sum of its proper divisors (1680550023).

1010010202021 is an equidigital number, since it uses as much as digits as its factorization.

1010010202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680550022.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1010010202021 its reverse (1202020100101), we get a palindrome (2212030302122).

The spelling of 1010010202021 in words is "one trillion, ten billion, ten million, two hundred two thousand, twenty-one".