1010202001021 has 16 divisors (see below), whose sum is σ = 1021277729664. Its totient is φ = 999166017024.

The previous prime is 1010202001019. The next prime is 1010202001031. The reversal of 1010202001021 is 1201002020101.

It is a cyclic number.

It is not a de Polignac number, because 1010202001021 - 2¹ = 1010202001019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010202000989 and 1010202001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010202001031) 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, 127434160 + ... + 127442086.

It is an arithmetic number, because the mean of its divisors is an integer number (63829858104).

Almost surely, 2^{1010202001021} is an apocalyptic number.

It is an amenable number.

1010202001021 is a deficient number, since it is larger than the sum of its proper divisors (11075728643).

1010202001021 is a wasteful number, since it uses less digits than its factorization.

1010202001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260.

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

Adding to 1010202001021 its reverse (1201002020101), we get a palindrome (2211204021122).

The spelling of 1010202001021 in words is "one trillion, ten billion, two hundred two million, one thousand, twenty-one".