221123210101 has 8 divisors (see below), whose sum is σ = 234134950464. Its totient is φ = 208111968960.

The previous prime is 221123210047. The next prime is 221123210111. The reversal of 221123210101 is 101012321122.

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

It is a cyclic number.

It is not a de Polignac number, because 221123210101 - 2²⁷ = 220988992373 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 (221123210111) 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, 1172496 + ... + 1347958.

It is an arithmetic number, because the mean of its divisors is an integer number (29266868808).

Almost surely, 2^221123210101 is an apocalyptic number.

It is an amenable number.

221123210101 is a deficient number, since it is larger than the sum of its proper divisors (13011740363).

221123210101 is a wasteful number, since it uses less digits than its factorization.

221123210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249611.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221123210101 its reverse (101012321122), we get a palindrome (322135531223).

The spelling of 221123210101 in words is "two hundred twenty-one billion, one hundred twenty-three million, two hundred ten thousand, one hundred one".