2001220222022 has 16 divisors (see below), whose sum is σ = 3430683002880. Its totient is φ = 857660868168.

The previous prime is 2001220222021. The next prime is 2001220222039. The reversal of 2001220222022 is 2202220221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001220222021) 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 7 ways as a sum of consecutive naturals, for example, 3193493 + ... + 3768399.

It is an arithmetic number, because the mean of its divisors is an integer number (214417687680).

Almost surely, 2^{2001220222022} is an apocalyptic number.

2001220222022 is a deficient number, since it is larger than the sum of its proper divisors (1429462780858).

2001220222022 is a wasteful number, since it uses less digits than its factorization.

2001220222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823555.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 2001220222022 its reverse (2202220221002), we get a palindrome (4203440443024).

The spelling of 2001220222022 in words is "two trillion, one billion, two hundred twenty million, two hundred twenty-two thousand, twenty-two".