2222421378 has 16 divisors (see below), whose sum is σ = 4462140960. Its totient is φ = 737924096.

The previous prime is 2222421353. The next prime is 2222421379. The reversal of 2222421378 is 8731242222.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2222421379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719088 + ... + 722171.

It is an arithmetic number, because the mean of its divisors is an integer number (278883810).

Almost surely, 2^2222421378 is an apocalyptic number.

2222421378 is an abundant number, since it is smaller than the sum of its proper divisors (2239719582).

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

2222421378 is a wasteful number, since it uses less digits than its factorization.

2222421378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441521.

The product of its digits is 21504, while the sum is 33.

The square root of 2222421378 is about 47142.5643977924. The cubic root of 2222421378 is about 1304.9948626506.

The spelling of 2222421378 in words is "two billion, two hundred twenty-two million, four hundred twenty-one thousand, three hundred seventy-eight".