1002020111010 has 192 divisors, whose sum is σ = 2705807130624. Its totient is φ = 257105923200.

The previous prime is 1002020110981. The next prime is 1002020111063. The reversal of 1002020111010 is 101110202001.

It is a happy number.

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 = 1002020110983 and 1002020111001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 110216565 + ... + 110225655.

It is an arithmetic number, because the mean of its divisors is an integer number (14092745472).

Almost surely, 2^{1002020111010} is an apocalyptic number.

1002020111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002020111010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352903565312).

1002020111010 is an abundant number, since it is smaller than the sum of its proper divisors (1703787019614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002020111010 is a wasteful number, since it uses less digits than its factorization.

1002020111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9589 (or 9586 counting only the distinct ones).

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

Adding to 1002020111010 its reverse (101110202001), we get a palindrome (1103130313011).

Subtracting from 1002020111010 its reverse (101110202001), we obtain a palindrome (900909909009).

The spelling of 1002020111010 in words is "one trillion, two billion, twenty million, one hundred eleven thousand, ten".