1002211010020 has 144 divisors (see below), whose sum is σ = 2491822900224. Its totient is φ = 337349548800.

The previous prime is 1002211009999. The next prime is 1002211010023. The reversal of 1002211010020 is 200101122001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1002211009979 and 1002211010006.

It is not an unprimeable number, because it can be changed into a prime (1002211010023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1435042 + ... + 2015878.

It is an arithmetic number, because the mean of its divisors is an integer number (17304325696).

Almost surely, 2^{1002211010020} is an apocalyptic number.

1002211010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002211010020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245911450112).

1002211010020 is an abundant number, since it is smaller than the sum of its proper divisors (1489611890204).

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

1002211010020 is a wasteful number, since it uses less digits than its factorization.

1002211010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580922 (or 580909 counting only the distinct ones).

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

Adding to 1002211010020 its reverse (200101122001), we get a palindrome (1202312132021).

The spelling of 1002211010020 in words is "one trillion, two billion, two hundred eleven million, ten thousand, twenty".