10001220222222 has 32 divisors (see below), whose sum is σ = 22767005388960. Its totient is φ = 3252429339840.

The previous prime is 10001220222163. The next prime is 10001220222223. The reversal of 10001220222222 is 22222202210001.

10001220222222 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 1 + 220 + 222 + 222 = 666.

10001220222222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10001220222195 and 10001220222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001220222223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2258629273 + ... + 2258633700.

It is an arithmetic number, because the mean of its divisors is an integer number (711468918405).

Almost surely, 2^{10001220222222} is an apocalyptic number.

10001220222222 is an abundant number, since it is smaller than the sum of its proper divisors (12765785166738).

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

10001220222222 is a wasteful number, since it uses less digits than its factorization.

10001220222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517263025 (or 4517263019 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 10001220222222 its reverse (22222202210001), we get a palindrome (32223422432223).

The spelling of 10001220222222 in words is "ten trillion, one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twenty-two".