221110120100101 has 4 divisors (see below), whose sum is σ = 224857749254400. Its totient is φ = 217362490945804.

The previous prime is 221110120100057. The next prime is 221110120100143. The reversal of 221110120100101 is 101001021011122.

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 221110120100101 - 2³⁷ = 220972681146629 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 (221110120100801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1873814577061 + ... + 1873814577178.

It is an arithmetic number, because the mean of its divisors is an integer number (56214437313600).

Almost surely, 2^{221110120100101} is an apocalyptic number.

It is an amenable number.

221110120100101 is a deficient number, since it is larger than the sum of its proper divisors (3747629154299).

221110120100101 is an equidigital number, since it uses as much as digits as its factorization.

221110120100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747629154298.

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

Adding to 221110120100101 its reverse (101001021011122), we get a palindrome (322111141111223).

The spelling of 221110120100101 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred twenty million, one hundred thousand, one hundred one".