2001121123322 has 4 divisors (see below), whose sum is σ = 3001681684986. Its totient is φ = 1000560561660.

The previous prime is 2001121123321. The next prime is 2001121123327. The reversal of 2001121123322 is 2233211211002.

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., 1985002027801 + 16119095521 = 1408901^2 + 126961^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2001121123294 and 2001121123303.

It is not an unprimeable number, because it can be changed into a prime (2001121123321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500280280829 + ... + 500280280832.

Almost surely, 2^{2001121123322} is an apocalyptic number.

2001121123322 is a deficient number, since it is larger than the sum of its proper divisors (1000560561664).

2001121123322 is a wasteful number, since it uses less digits than its factorization.

2001121123322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000560561663.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2001121123322 its reverse (2233211211002), we get a palindrome (4234332334324).

The spelling of 2001121123322 in words is "two trillion, one billion, one hundred twenty-one million, one hundred twenty-three thousand, three hundred twenty-two".