10001121122222 has 4 divisors (see below), whose sum is σ = 15001681683336. Its totient is φ = 5000560561110.

The previous prime is 10001121122171. The next prime is 10001121122287. The reversal of 10001121122222 is 22222112110001.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10001121122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500280280554 + ... + 2500280280557.

It is an arithmetic number, because the mean of its divisors is an integer number (3750420420834).

Almost surely, 2^{10001121122222} is an apocalyptic number.

10001121122222 is a deficient number, since it is larger than the sum of its proper divisors (5000560561114).

10001121122222 is an equidigital number, since it uses as much as digits as its factorization.

10001121122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000560561113.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10001121122222 its reverse (22222112110001), we get a palindrome (32223233232223).

The spelling of 10001121122222 in words is "ten trillion, one billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".