2222222221000 has 64 divisors (see below), whose sum is σ = 5258427174000. Its totient is φ = 878901337600.

The previous prime is 2222222220983. The next prime is 2222222221019. The reversal of 2222222221000 is 1222222222.

It can be written as a sum of positive squares in 8 ways, for example, as 45824252356 + 2176397968644 = 214066^2 + 1475262^2 .

It is a nialpdrome in base 10.

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 15 ways as a sum of consecutive naturals, for example, 12395395 + ... + 12573394.

Almost surely, 2^{2222222221000} is an apocalyptic number.

2222222221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222222221000 is an abundant number, since it is smaller than the sum of its proper divisors (3036204953000).

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

2222222221000 is a wasteful number, since it uses less digits than its factorization.

2222222221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24968899 (or 24968885 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 2222222221000 its reverse (1222222222), we get a palindrome (2223444443222).

The spelling of 2222222221000 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand".