221102210021001 has 32 divisors (see below), whose sum is σ = 308734260168960. Its totient is φ = 140597158950144.

The previous prime is 221102210020999. The next prime is 221102210021039. The reversal of 221102210021001 is 100120012201122.

It is not a de Polignac number, because 221102210021001 - 2¹ = 221102210020999 is a prime.

It is a super-2 number, since 2×221102210021001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221102210021201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8059965 + ... + 22520378.

It is an arithmetic number, because the mean of its divisors is an integer number (9647945630280).

Almost surely, 2^{221102210021001} is an apocalyptic number.

It is an amenable number.

221102210021001 is a deficient number, since it is larger than the sum of its proper divisors (87632050147959).

221102210021001 is a wasteful number, since it uses less digits than its factorization.

221102210021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30581665.

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

Adding to 221102210021001 its reverse (100120012201122), we get a palindrome (321222222222123).

The spelling of 221102210021001 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred ten million, twenty-one thousand, one".