221120021001 has 8 divisors (see below), whose sum is σ = 321629121504. Its totient is φ = 134012133920.

The previous prime is 221120020999. The next prime is 221120021029. The reversal of 221120021001 is 100120021122.

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 221120021001 - 2¹ = 221120020999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221120021041) 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, 3350303316 + ... + 3350303381.

It is an arithmetic number, because the mean of its divisors is an integer number (40203640188).

Almost surely, 2^221120021001 is an apocalyptic number.

It is an amenable number.

221120021001 is a deficient number, since it is larger than the sum of its proper divisors (100509100503).

221120021001 is a wasteful number, since it uses less digits than its factorization.

221120021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700606711.

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

Adding to 221120021001 its reverse (100120021122), we get a palindrome (321240042123).

The spelling of 221120021001 in words is "two hundred twenty-one billion, one hundred twenty million, twenty-one thousand, one".