21110120021101 has 8 divisors (see below), whose sum is σ = 22248179203520. Its totient is φ = 19974760862112.

The previous prime is 21110120021083. The next prime is 21110120021129. The reversal of 21110120021101 is 10112002101112.

It is a happy number.

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 21110120021101 - 2¹³ = 21110120012909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110120021701) 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 7 ways as a sum of consecutive naturals, for example, 674989800 + ... + 675021073.

It is an arithmetic number, because the mean of its divisors is an integer number (2781022400440).

Almost surely, 2^{21110120021101} is an apocalyptic number.

It is an amenable number.

21110120021101 is a deficient number, since it is larger than the sum of its proper divisors (1138059182419).

21110120021101 is a wasteful number, since it uses less digits than its factorization.

21110120021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350011715.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21110120021101 its reverse (10112002101112), we get a palindrome (31222122122213).

The spelling of 21110120021101 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty million, twenty-one thousand, one hundred one".