221021122010001 has 8 divisors (see below), whose sum is σ = 294702113297760. Its totient is φ = 147343772697792.

The previous prime is 221021122009999. The next prime is 221021122010023. The reversal of 221021122010001 is 100010221120122.

221021122010001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221021122010001 - 2¹ = 221021122009999 is a prime.

It is a super-3 number, since 3×221021122010001³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (221021122010081) 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, 910352280 + ... + 910595033.

It is an arithmetic number, because the mean of its divisors is an integer number (36837764162220).

Almost surely, 2^{221021122010001} is an apocalyptic number.

It is an amenable number.

221021122010001 is a deficient number, since it is larger than the sum of its proper divisors (73680991287759).

221021122010001 is a wasteful number, since it uses less digits than its factorization.

221021122010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820987775.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221021122010001 its reverse (100010221120122), we get a palindrome (321031343130123).

The spelling of 221021122010001 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty-two million, ten thousand, one".