20112001100121 has 16 divisors (see below), whose sum is σ = 30647074915328. Its totient is φ = 11492491021200.

The previous prime is 20112001100101. The next prime is 20112001100179. The reversal of 20112001100121 is 12100110021102.

It is not a de Polignac number, because 20112001100121 - 2¹⁹ = 20112000575833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112001100097 and 20112001100106.

It is not an unprimeable number, because it can be changed into a prime (20112001100101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260485 + ... + 6347586.

It is an arithmetic number, because the mean of its divisors is an integer number (1915442182208).

Almost surely, 2^{20112001100121} is an apocalyptic number.

20112001100121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20112001100121 is a deficient number, since it is larger than the sum of its proper divisors (10535073815207).

20112001100121 is a wasteful number, since it uses less digits than its factorization.

20112001100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753012.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20112001100121 its reverse (12100110021102), we get a palindrome (32212111121223).

The spelling of 20112001100121 in words is "twenty trillion, one hundred twelve billion, one million, one hundred thousand, one hundred twenty-one".