21200101201121 has 8 divisors (see below), whose sum is σ = 22372107334080. Its totient is φ = 20033716201488.

The previous prime is 21200101201043. The next prime is 21200101201127. The reversal of 21200101201121 is 12110210100212.

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

It is a cyclic number.

It is not a de Polignac number, because 21200101201121 - 2²⁶ = 21200034092257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21200101201096 and 21200101201105.

It is not an unprimeable number, because it can be changed into a prime (21200101201127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405275581 + ... + 1405290666.

It is an arithmetic number, because the mean of its divisors is an integer number (2796513416760).

Almost surely, 2^{21200101201121} is an apocalyptic number.

It is an amenable number.

21200101201121 is a deficient number, since it is larger than the sum of its proper divisors (1172006132959).

21200101201121 is a wasteful number, since it uses less digits than its factorization.

21200101201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810566663.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21200101201121 its reverse (12110210100212), we get a palindrome (33310311301333).

The spelling of 21200101201121 in words is "twenty-one trillion, two hundred billion, one hundred one million, two hundred one thousand, one hundred twenty-one".