2001220211122 has 8 divisors (see below), whose sum is σ = 3274723981872. Its totient is φ = 909645550500.

The previous prime is 2001220211063. The next prime is 2001220211171. The reversal of 2001220211122 is 2211120221002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2001220211096 and 2001220211105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45482277504 + ... + 45482277547.

It is an arithmetic number, because the mean of its divisors is an integer number (409340497734).

Almost surely, 2^{2001220211122} is an apocalyptic number.

2001220211122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001220211122 is a deficient number, since it is larger than the sum of its proper divisors (1273503770750).

2001220211122 is a wasteful number, since it uses less digits than its factorization.

2001220211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90964555064.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2001220211122 its reverse (2211120221002), we get a palindrome (4212340432124).

The spelling of 2001220211122 in words is "two trillion, one billion, two hundred twenty million, two hundred eleven thousand, one hundred twenty-two".