221101220001 has 8 divisors (see below), whose sum is σ = 296922502240. Its totient is φ = 146340375552.

The previous prime is 221101219987. The next prime is 221101220071. The reversal of 221101220001 is 100022101122.

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

It is not a de Polignac number, because 221101220001 - 2⁷ = 221101219873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221101220071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265108960 + ... + 265109793.

It is an arithmetic number, because the mean of its divisors is an integer number (37115312780).

Almost surely, 2^221101220001 is an apocalyptic number.

It is an amenable number.

221101220001 is a deficient number, since it is larger than the sum of its proper divisors (75821282239).

221101220001 is a wasteful number, since it uses less digits than its factorization.

221101220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530218895.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221101220001 its reverse (100022101122), we get a palindrome (321123321123).

The spelling of 221101220001 in words is "two hundred twenty-one billion, one hundred one million, two hundred twenty thousand, one".