1003421636220 has 192 divisors, whose sum is σ = 2885415321600. Its totient is φ = 260462822400.

The previous prime is 1003421636213. The next prime is 1003421636267. The reversal of 1003421636220 is 226361243001.

1003421636220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139109334 + ... + 139116546.

It is an arithmetic number, because the mean of its divisors is an integer number (15028204800).

Almost surely, 2^{1003421636220} is an apocalyptic number.

1003421636220 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 1003421636220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1442707660800).

1003421636220 is an abundant number, since it is smaller than the sum of its proper divisors (1881993685380).

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

1003421636220 is a wasteful number, since it uses less digits than its factorization.

1003421636220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7676 (or 7674 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 1003421636220 its reverse (226361243001), we get a palindrome (1229782879221).

The spelling of 1003421636220 in words is "one trillion, three billion, four hundred twenty-one million, six hundred thirty-six thousand, two hundred twenty".