221010212021201 has 16 divisors (see below), whose sum is σ = 223433516617920. Its totient is φ = 218589892392960.

The previous prime is 221010212021189. The next prime is 221010212021257. The reversal of 221010212021201 is 102120212010122.

221010212021201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221010212021201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221010212021201.

It is not an unprimeable number, because it can be changed into a prime (221010212081201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1579465721 + ... + 1579605641.

It is an arithmetic number, because the mean of its divisors is an integer number (13964594788620).

Almost surely, 2^{221010212021201} is an apocalyptic number.

It is an amenable number.

221010212021201 is a deficient number, since it is larger than the sum of its proper divisors (2423304596719).

221010212021201 is a wasteful number, since it uses less digits than its factorization.

221010212021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150464.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221010212021201 its reverse (102120212010122), we get a palindrome (323130424031323).

The spelling of 221010212021201 in words is "two hundred twenty-one trillion, ten billion, two hundred twelve million, twenty-one thousand, two hundred one".