1002011020101 has 80 divisors (see below), whose sum is σ = 1850372625024. Its totient is φ = 526204066176.

The previous prime is 1002011020091. The next prime is 1002011020117. The reversal of 1002011020101 is 1010201102001.

It is a happy number.

It is not a de Polignac number, because 1002011020101 - 2⁶ = 1002011020037 is a prime.

It is a super-3 number, since 3×1002011020101³ (a number of 37 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002011020181) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1373791 + ... + 1972643.

Almost surely, 2^{1002011020101} is an apocalyptic number.

It is an amenable number.

1002011020101 is a deficient number, since it is larger than the sum of its proper divisors (848361604923).

1002011020101 is a wasteful number, since it uses less digits than its factorization.

1002011020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599112 (or 599103 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1002011020101 its reverse (1010201102001), we get a palindrome (2012212122102).

The spelling of 1002011020101 in words is "one trillion, two billion, eleven million, twenty thousand, one hundred one".