10021223220 has 24 divisors (see below), whose sum is σ = 28059425184. Its totient is φ = 2672326176.

The previous prime is 10021223213. The next prime is 10021223221. The reversal of 10021223220 is 2232212001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10021223220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021223221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83510134 + ... + 83510253.

It is an arithmetic number, because the mean of its divisors is an integer number (1169142716).

Almost surely, 2^10021223220 is an apocalyptic number.

10021223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021223220 is an abundant number, since it is smaller than the sum of its proper divisors (18038201964).

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

10021223220 is a wasteful number, since it uses less digits than its factorization.

10021223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167020399 (or 167020397 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 10021223220 its reverse (2232212001), we get a palindrome (12253435221).

The spelling of 10021223220 in words is "ten billion, twenty-one million, two hundred twenty-three thousand, two hundred twenty".