1001000020220 has 12 divisors (see below), whose sum is σ = 2102100042504. Its totient is φ = 400400008080.

The previous prime is 1001000020187. The next prime is 1001000020303. The reversal of 1001000020220 is 220200001001.

It is a junction number, because it is equal to n+sod(n) for n = 1001000020198 and 1001000020207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25025000486 + ... + 25025000525.

It is an arithmetic number, because the mean of its divisors is an integer number (175175003542).

Almost surely, 2^{1001000020220} is an apocalyptic number.

1001000020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001000020220 is an abundant number, since it is smaller than the sum of its proper divisors (1101100022284).

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

1001000020220 is a wasteful number, since it uses less digits than its factorization.

1001000020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50050001020 (or 50050001018 counting only the distinct ones).

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

Adding to 1001000020220 its reverse (220200001001), we get a palindrome (1221200021221).

The spelling of 1001000020220 in words is "one trillion, one billion, twenty thousand, two hundred twenty".