2001221212119 has 16 divisors (see below), whose sum is σ = 2752699901952. Its totient is φ = 1292268390048.

The previous prime is 2001221212117. The next prime is 2001221212157. The reversal of 2001221212119 is 9112121221002.

It is not a de Polignac number, because 2001221212119 - 2¹ = 2001221212117 is a prime.

It is a super-2 number, since 2×2001221212119² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001221212117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40399059 + ... + 40448564.

It is an arithmetic number, because the mean of its divisors is an integer number (172043743872).

Almost surely, 2^{2001221212119} is an apocalyptic number.

2001221212119 is a deficient number, since it is larger than the sum of its proper divisors (751478689833).

2001221212119 is a wasteful number, since it uses less digits than its factorization.

2001221212119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80847886.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 2001221212119 in words is "two trillion, one billion, two hundred twenty-one million, two hundred twelve thousand, one hundred nineteen".