10001121222 has 32 divisors (see below), whose sum is σ = 20460736512. Its totient is φ = 3258075744.

The previous prime is 10001121197. The next prime is 10001121223. The reversal of 10001121222 is 22212110001.

It is a junction number, because it is equal to n+sod(n) for n = 10001121198 and 10001121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46893 + ... + 149000.

It is an arithmetic number, because the mean of its divisors is an integer number (639398016).

Almost surely, 2^10001121222 is an apocalyptic number.

10001121222 is an abundant number, since it is smaller than the sum of its proper divisors (10459615290).

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

10001121222 is a wasteful number, since it uses less digits than its factorization.

10001121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196092.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10001121222 its reverse (22212110001), we get a palindrome (32213231223).

The spelling of 10001121222 in words is "ten billion, one million, one hundred twenty-one thousand, two hundred twenty-two".