2001301220121 has 64 divisors (see below), whose sum is σ = 3271845298176. Its totient is φ = 1063258099200.

The previous prime is 2001301220089. The next prime is 2001301220143. The reversal of 2001301220121 is 1210221031002.

It is not a de Polignac number, because 2001301220121 - 2⁵ = 2001301220089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2001301220121.

It is not an unprimeable number, because it can be changed into a prime (2001301220161) 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 63 ways as a sum of consecutive naturals, for example, 5180155 + ... + 5553071.

It is an arithmetic number, because the mean of its divisors is an integer number (51122582784).

Almost surely, 2^{2001301220121} is an apocalyptic number.

2001301220121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2001301220121 is a deficient number, since it is larger than the sum of its proper divisors (1270544078055).

2001301220121 is a wasteful number, since it uses less digits than its factorization.

2001301220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373262.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2001301220121 its reverse (1210221031002), we get a palindrome (3211522251123).

The spelling of 2001301220121 in words is "two trillion, one billion, three hundred one million, two hundred twenty thousand, one hundred twenty-one".