10221020220 has 48 divisors (see below), whose sum is σ = 28902228768. Its totient is φ = 2698617600.

The previous prime is 10221020207. The next prime is 10221020221. The reversal of 10221020220 is 2202012201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10221020196 and 10221020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221020221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837259 + ... + 849378.

It is an arithmetic number, because the mean of its divisors is an integer number (602129766).

Almost surely, 2^10221020220 is an apocalyptic number.

10221020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221020220 is an abundant number, since it is smaller than the sum of its proper divisors (18681208548).

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

10221020220 is a wasteful number, since it uses less digits than its factorization.

10221020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686750 (or 1686748 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 10221020220 its reverse (2202012201), we get a palindrome (12423032421).

The spelling of 10221020220 in words is "ten billion, two hundred twenty-one million, twenty thousand, two hundred twenty".