221001021200211 has 16 divisors (see below), whose sum is σ = 336763776973824. Its totient is φ = 126286179292224.

The previous prime is 221001021200161. The next prime is 221001021200213. The reversal of 221001021200211 is 112002120100122.

It is not a de Polignac number, because 221001021200211 - 2⁷ = 221001021200083 is a prime.

It is a super-2 number, since 2×221001021200211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221001021200213) 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, 21178471 + ... + 29841743.

It is an arithmetic number, because the mean of its divisors is an integer number (21047736060864).

Almost surely, 2^{221001021200211} is an apocalyptic number.

221001021200211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

221001021200211 is a deficient number, since it is larger than the sum of its proper divisors (115762755773613).

221001021200211 is a wasteful number, since it uses less digits than its factorization.

221001021200211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9878050.

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

Adding to 221001021200211 its reverse (112002120100122), we get a palindrome (333003141300333).

The spelling of 221001021200211 in words is "two hundred twenty-one trillion, one billion, twenty-one million, two hundred thousand, two hundred eleven".