10211220220 has 24 divisors (see below), whose sum is σ = 21460647600. Its totient is φ = 4081233792.

The previous prime is 10211220197. The next prime is 10211220259. The reversal of 10211220220 is 2202211201.

It is a happy number.

10211220220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 10211220220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177585 + ... + 227944.

It is an arithmetic number, because the mean of its divisors is an integer number (894193650).

Almost surely, 2^10211220220 is an apocalyptic number.

10211220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10211220220 is an abundant number, since it is smaller than the sum of its proper divisors (11249427380).

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

10211220220 is a wasteful number, since it uses less digits than its factorization.

10211220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406797 (or 406795 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10211220220 its reverse (2202211201), we get a palindrome (12413431421).

The spelling of 10211220220 in words is "ten billion, two hundred eleven million, two hundred twenty thousand, two hundred twenty".