221010212001 has 16 divisors (see below), whose sum is σ = 306045129600. Its totient is φ = 141747205248.

The previous prime is 221010211991. The next prime is 221010212041. The reversal of 221010212001 is 100212010122.

221010212001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221010212001 - 2¹⁸ = 221009949857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221010212041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11175981 + ... + 11195738.

It is an arithmetic number, because the mean of its divisors is an integer number (19127820600).

Almost surely, 2^221010212001 is an apocalyptic number.

It is an amenable number.

221010212001 is a deficient number, since it is larger than the sum of its proper divisors (85034917599).

221010212001 is a wasteful number, since it uses less digits than its factorization.

221010212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22371848.

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

Adding to 221010212001 its reverse (100212010122), we get a palindrome (321222222123).

The spelling of 221010212001 in words is "two hundred twenty-one billion, ten million, two hundred twelve thousand, one".