221421103101 has 12 divisors (see below), whose sum is σ = 348905980800. Its totient is φ = 134194607880.

The previous prime is 221421103091. The next prime is 221421103117. The reversal of 221421103101 is 101301124122.

221421103101 is a `hidden beast` number, since 221 + 421 + 10 + 3 + 10 + 1 = 666.

It is not a de Polignac number, because 221421103101 - 2¹⁴ = 221421086717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221421103901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1118288301 + ... + 1118288498.

It is an arithmetic number, because the mean of its divisors is an integer number (29075498400).

Almost surely, 2^221421103101 is an apocalyptic number.

It is an amenable number.

221421103101 is a deficient number, since it is larger than the sum of its proper divisors (127484877699).

221421103101 is a wasteful number, since it uses less digits than its factorization.

221421103101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236576816 (or 2236576813 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 221421103101 its reverse (101301124122), we get a palindrome (322722227223).

The spelling of 221421103101 in words is "two hundred twenty-one billion, four hundred twenty-one million, one hundred three thousand, one hundred one".