1002133220 has 24 divisors (see below), whose sum is σ = 2295796608. Its totient is φ = 364412000.

The previous prime is 1002133219. The next prime is 1002133241. The reversal of 1002133220 is 223312001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1002133195 and 1002133204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2277356 + ... + 2277795.

It is an arithmetic number, because the mean of its divisors is an integer number (95658192).

Almost surely, 2^1002133220 is an apocalyptic number.

1002133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002133220 is an abundant number, since it is smaller than the sum of its proper divisors (1293663388).

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

1002133220 is a wasteful number, since it uses less digits than its factorization.

1002133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555171 (or 4555169 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1002133220 is about 31656.4878026606. The cubic root of 1002133220 is about 1000.7105683064.

Adding to 1002133220 its reverse (223312001), we get a palindrome (1225445221).

The spelling of 1002133220 in words is "one billion, two million, one hundred thirty-three thousand, two hundred twenty".