1010020002021 has 40 divisors (see below), whose sum is σ = 1529047359840. Its totient is φ = 664330608288.

The previous prime is 1010020001989. The next prime is 1010020002023. The reversal of 1010020002021 is 1202000200101.

1010020002021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1010020002021 - 2⁵ = 1010020001989 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1010020001994 and 1010020002012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010020002023) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4866651 + ... + 5069943.

It is an arithmetic number, because the mean of its divisors is an integer number (38226183996).

Almost surely, 2^{1010020002021} is an apocalyptic number.

It is an amenable number.

1010020002021 is a deficient number, since it is larger than the sum of its proper divisors (519027357819).

1010020002021 is an equidigital number, since it uses as much as digits as its factorization.

1010020002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204127 (or 204118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1010020002021 its reverse (1202000200101), we get a palindrome (2212020202122).

The spelling of 1010020002021 in words is "one trillion, ten billion, twenty million, two thousand, twenty-one".