21120300301121 has 8 divisors (see below), whose sum is σ = 24138360477504. Its totient is φ = 18102458729520.

The previous prime is 21120300301057. The next prime is 21120300301127. The reversal of 21120300301121 is 12110300302112.

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 21120300301121 - 2⁶ = 21120300301057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21120300301121.

It is not an unprimeable number, because it can be changed into a prime (21120300301127) 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, 54444110 + ... + 54830663.

It is an arithmetic number, because the mean of its divisors is an integer number (3017295059688).

Almost surely, 2^{21120300301121} is an apocalyptic number.

It is an amenable number.

21120300301121 is a deficient number, since it is larger than the sum of its proper divisors (3018060176383).

21120300301121 is a wasteful number, since it uses less digits than its factorization.

21120300301121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109302391.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21120300301121 its reverse (12110300302112), we get a palindrome (33230600603233).

Subtracting from 21120300301121 its reverse (12110300302112), we obtain a palindrome (9009999999009).

The spelling of 21120300301121 in words is "twenty-one trillion, one hundred twenty billion, three hundred million, three hundred one thousand, one hundred twenty-one".