222021320010 has 128 divisors (see below), whose sum is σ = 636631916544. Its totient is φ = 48451011840.

The previous prime is 222021320009. The next prime is 222021320051. The reversal of 222021320010 is 10023120222.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2570547 + ... + 2655513.

It is an arithmetic number, because the mean of its divisors is an integer number (4973686848).

Almost surely, 2^222021320010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222021320010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318315958272).

222021320010 is an abundant number, since it is smaller than the sum of its proper divisors (414610596534).

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

222021320010 is a wasteful number, since it uses less digits than its factorization.

222021320010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85548.

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

Adding to 222021320010 its reverse (10023120222), we get a palindrome (232044440232).

The spelling of 222021320010 in words is "two hundred twenty-two billion, twenty-one million, three hundred twenty thousand, ten".