1010202021021 has 64 divisors (see below), whose sum is σ = 1423200844800. Its totient is φ = 636494401536.

The previous prime is 1010202021013. The next prime is 1010202021029. The reversal of 1010202021021 is 1201202020101.

It is an interprime number because it is at equal distance from previous prime (1010202021013) and next prime (1010202021029).

It is not a de Polignac number, because 1010202021021 - 2³ = 1010202021013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1010202020988 and 1010202021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010202021029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 830075005 + ... + 830076221.

It is an arithmetic number, because the mean of its divisors is an integer number (22237513200).

Almost surely, 2^{1010202021021} is an apocalyptic number.

It is an amenable number.

1010202021021 is a deficient number, since it is larger than the sum of its proper divisors (412998823779).

1010202021021 is a wasteful number, since it uses less digits than its factorization.

1010202021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298.

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

Adding to 1010202021021 its reverse (1201202020101), we get a palindrome (2211404041122).

The spelling of 1010202021021 in words is "one trillion, ten billion, two hundred two million, twenty-one thousand, twenty-one".