1002220231220 has 96 divisors (see below), whose sum is σ = 2307489811200. Its totient is φ = 363381755904.

The previous prime is 1002220231217. The next prime is 1002220231223. The reversal of 1002220231220 is 221320222001.

It is an interprime number because it is at equal distance from previous prime (1002220231217) and next prime (1002220231223).

It is a super-3 number, since 3×1002220231220³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002220231223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14215697 + ... + 14286023.

It is an arithmetic number, because the mean of its divisors is an integer number (24036352200).

Almost surely, 2^{1002220231220} is an apocalyptic number.

1002220231220 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 1002220231220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1153744905600).

1002220231220 is an abundant number, since it is smaller than the sum of its proper divisors (1305269579980).

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

1002220231220 is a wasteful number, since it uses less digits than its factorization.

1002220231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71337 (or 71335 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 1002220231220 its reverse (221320222001), we get a palindrome (1223540453221).

The spelling of 1002220231220 in words is "one trillion, two billion, two hundred twenty million, two hundred thirty-one thousand, two hundred twenty".