222021219378 has 64 divisors (see below), whose sum is σ = 514257408000. Its totient is φ = 62588208384.

The previous prime is 222021219377. The next prime is 222021219379. The reversal of 222021219378 is 873912120222.

It is an interprime number because it is at equal distance from previous prime (222021219377) and next prime (222021219379).

It is not an unprimeable number, because it can be changed into a prime (222021219373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4918033 + ... + 4962971.

It is an arithmetic number, because the mean of its divisors is an integer number (8035272000).

Almost surely, 2^222021219378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222021219378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257128704000).

222021219378 is an abundant number, since it is smaller than the sum of its proper divisors (292236188622).

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

222021219378 is a wasteful number, since it uses less digits than its factorization.

222021219378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46519.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 222021219378 in words is "two hundred twenty-two billion, twenty-one million, two hundred nineteen thousand, three hundred seventy-eight".