221021112001101 has 4 divisors (see below), whose sum is σ = 294694816001472. Its totient is φ = 147347408000732.

The previous prime is 221021112001037. The next prime is 221021112001153. The reversal of 221021112001101 is 101100211120122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221021112001101 - 2⁶ = 221021112001037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221021112011101) 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 3 ways as a sum of consecutive naturals, for example, 36836852000181 + ... + 36836852000186.

It is an arithmetic number, because the mean of its divisors is an integer number (73673704000368).

Almost surely, 2^{221021112001101} is an apocalyptic number.

It is an amenable number.

221021112001101 is a deficient number, since it is larger than the sum of its proper divisors (73673704000371).

221021112001101 is an equidigital number, since it uses as much as digits as its factorization.

221021112001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73673704000370.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221021112001101 its reverse (101100211120122), we get a palindrome (322121323121223).

The spelling of 221021112001101 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twelve million, one thousand, one hundred one".