221010202120001 has 32 divisors (see below), whose sum is σ = 257438220399360. Its totient is φ = 185813746732800.

The previous prime is 221010202119983. The next prime is 221010202120003. The reversal of 221010202120001 is 100021202010122.

It is a cyclic number.

It is not a de Polignac number, because 221010202120001 - 2⁶ = 221010202119937 is a prime.

It is a super-2 number, since 2×221010202120001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221010202120003) 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, 321895610 + ... + 322581468.

It is an arithmetic number, because the mean of its divisors is an integer number (8044944387480).

Almost surely, 2^{221010202120001} is an apocalyptic number.

It is an amenable number.

221010202120001 is a deficient number, since it is larger than the sum of its proper divisors (36428018279359).

221010202120001 is a wasteful number, since it uses less digits than its factorization.

221010202120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688025.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221010202120001 its reverse (100021202010122), we get a palindrome (321031404130123).

The spelling of 221010202120001 in words is "two hundred twenty-one trillion, ten billion, two hundred two million, one hundred twenty thousand, one".