1020100220 has 48 divisors (see below), whose sum is σ = 2192496768. Its totient is φ = 398499840.

The previous prime is 1020100217. The next prime is 1020100241. The reversal of 1020100220 is 220010201.

It is a junction number, because it is equal to n+sod(n) for n = 1020100198 and 1020100207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601694 + ... + 603386.

It is an arithmetic number, because the mean of its divisors is an integer number (45677016).

Almost surely, 2^1020100220 is an apocalyptic number.

1020100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020100220 is an abundant number, since it is smaller than the sum of its proper divisors (1172396548).

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

1020100220 is a wasteful number, since it uses less digits than its factorization.

1020100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390 (or 2388 counting only the distinct ones).

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

The square root of 1020100220 is about 31939.0078117652. The cubic root of 1020100220 is about 1006.6556770189.

Adding to 1020100220 its reverse (220010201), we get a palindrome (1240110421).

The spelling of 1020100220 in words is "one billion, twenty million, one hundred thousand, two hundred twenty".