1020002020101 has 12 divisors (see below), whose sum is σ = 1520863227520. Its totient is φ = 658065819240.

The previous prime is 1020002020087. The next prime is 1020002020117. The reversal of 1020002020101 is 1010202000201.

It is not a de Polignac number, because 1020002020101 - 2⁵ = 1020002020069 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020002020201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1827960331 + ... + 1827960888.

Almost surely, 2^{1020002020101} is an apocalyptic number.

It is an amenable number.

1020002020101 is a deficient number, since it is larger than the sum of its proper divisors (500861207419).

1020002020101 is a wasteful number, since it uses less digits than its factorization.

1020002020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655921256 (or 3655921253 counting only the distinct ones).

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

Adding to 1020002020101 its reverse (1010202000201), we get a palindrome (2030204020302).

The spelling of 1020002020101 in words is "one trillion, twenty billion, two million, twenty thousand, one hundred one".