221103100213001 has 4 divisors (see below), whose sum is σ = 221130762312852. Its totient is φ = 221075438113152.

The previous prime is 221103100212949. The next prime is 221103100213003. The reversal of 221103100213001 is 100312001301122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29925494976400 + 191177605236601 = 5470420^2 + 13826699^2 .

It is a cyclic number.

It is not a de Polignac number, because 221103100213001 - 2¹⁰ = 221103100211977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221103100213003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13831037936 + ... + 13831053921.

It is an arithmetic number, because the mean of its divisors is an integer number (55282690578213).

Almost surely, 2^{221103100213001} is an apocalyptic number.

It is an amenable number.

221103100213001 is a deficient number, since it is larger than the sum of its proper divisors (27662099851).

221103100213001 is an equidigital number, since it uses as much as digits as its factorization.

221103100213001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27662099850.

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

Adding to 221103100213001 its reverse (100312001301122), we get a palindrome (321415101514123).

The spelling of 221103100213001 in words is "two hundred twenty-one trillion, one hundred three billion, one hundred million, two hundred thirteen thousand, one".