9001121012122 has 4 divisors (see below), whose sum is σ = 13501681518186. Its totient is φ = 4500560506060.

The previous prime is 9001121012101. The next prime is 9001121012129. The reversal of 9001121012122 is 2212101211009.

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

It can be written as a sum of positive squares in only one way, i.e., 5973385290601 + 3027735721521 = 2444051^2 + 1740039^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9001121012093 and 9001121012102.

It is not an unprimeable number, because it can be changed into a prime (9001121012129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2250280253029 + ... + 2250280253032.

Almost surely, 2^{9001121012122} is an apocalyptic number.

9001121012122 is a deficient number, since it is larger than the sum of its proper divisors (4500560506064).

9001121012122 is a wasteful number, since it uses less digits than its factorization.

9001121012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500560506063.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 9001121012122 in words is "nine trillion, one billion, one hundred twenty-one million, twelve thousand, one hundred twenty-two".