1002120021010 has 64 divisors (see below), whose sum is σ = 1927618331904. Its totient is φ = 373776076800.

The previous prime is 1002120020999. The next prime is 1002120021037. The reversal of 1002120021010 is 101200212001.

It is a super-3 number, since 3×1002120021010³ (a number of 37 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53605765 + ... + 53624455.

It is an arithmetic number, because the mean of its divisors is an integer number (30119036436).

Almost surely, 2^{1002120021010} is an apocalyptic number.

1002120021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1002120021010 is a deficient number, since it is larger than the sum of its proper divisors (925498310894).

1002120021010 is a wasteful number, since it uses less digits than its factorization.

1002120021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21619.

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

Adding to 1002120021010 its reverse (101200212001), we get a palindrome (1103320233011).

The spelling of 1002120021010 in words is "one trillion, two billion, one hundred twenty million, twenty-one thousand, ten".