20011202010121 has 8 divisors (see below), whose sum is σ = 22871096813504. Its totient is φ = 17151595121520.

The previous prime is 20011202010029. The next prime is 20011202010133. The reversal of 20011202010121 is 12101020211002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011202010121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011202014121) 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, 71829735 + ... + 72107788.

It is an arithmetic number, because the mean of its divisors is an integer number (2858887101688).

Almost surely, 2^{20011202010121} is an apocalyptic number.

It is an amenable number.

20011202010121 is a deficient number, since it is larger than the sum of its proper divisors (2859894803383).

20011202010121 is a wasteful number, since it uses less digits than its factorization.

20011202010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143957391.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20011202010121 its reverse (12101020211002), we get a palindrome (32112222221123).

The spelling of 20011202010121 in words is "twenty trillion, eleven billion, two hundred two million, ten thousand, one hundred twenty-one".