21111132221101 has 8 divisors (see below), whose sum is σ = 22786386164640. Its totient is φ = 19443209805552.

The previous prime is 21111132221077. The next prime is 21111132221129. The reversal of 21111132221101 is 10112223111112.

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

It is not a de Polignac number, because 21111132221101 - 2¹⁹ = 21111131696813 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 (21111132221191) 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, 1832876011 + ... + 1832887528.

It is an arithmetic number, because the mean of its divisors is an integer number (2848298270580).

Almost surely, 2^{21111132221101} is an apocalyptic number.

It is an amenable number.

21111132221101 is a deficient number, since it is larger than the sum of its proper divisors (1675253943539).

21111132221101 is a wasteful number, since it uses less digits than its factorization.

21111132221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665763995.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 21111132221101 its reverse (10112223111112), we get a palindrome (31223355332213).

The spelling of 21111132221101 in words is "twenty-one trillion, one hundred eleven billion, one hundred thirty-two million, two hundred twenty-one thousand, one hundred one".