221121000021101 has 8 divisors (see below), whose sum is σ = 221890352088384. Its totient is φ = 220352048560800.

The previous prime is 221121000021079. The next prime is 221121000021107. The reversal of 221121000021101 is 101120000121122.

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 221121000021101 - 2⁶ = 221121000021037 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 (221121000021107) 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, 99045875 + ... + 101253776.

It is an arithmetic number, because the mean of its divisors is an integer number (27736294011048).

Almost surely, 2^{221121000021101} is an apocalyptic number.

It is an amenable number.

221121000021101 is a deficient number, since it is larger than the sum of its proper divisors (769352067283).

221121000021101 is a wasteful number, since it uses less digits than its factorization.

221121000021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200303491.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221121000021101 its reverse (101120000121122), we get a palindrome (322241000142223).

The spelling of 221121000021101 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twenty-one thousand, one hundred one".