221222100111201 has 24 divisors (see below), whose sum is σ = 366922806254784. Its totient is φ = 125813516643360.

The previous prime is 221222100111193. The next prime is 221222100111281. The reversal of 221222100111201 is 102111001222122.

221222100111201 is a `hidden beast` number, since 22 + 122 + 210 + 0 + 111 + 201 = 666.

It is not a de Polignac number, because 221222100111201 - 2³ = 221222100111193 is a prime.

It is a super-2 number, since 2×221222100111201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221222100111281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8320986486 + ... + 8321013071.

It is an arithmetic number, because the mean of its divisors is an integer number (15288450260616).

Almost surely, 2^{221222100111201} is an apocalyptic number.

221222100111201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221222100111201 is a deficient number, since it is larger than the sum of its proper divisors (145700706143583).

221222100111201 is a wasteful number, since it uses less digits than its factorization.

221222100111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16641999781 (or 16641999778 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221222100111201 its reverse (102111001222122), we get a palindrome (323333101333323).

The spelling of 221222100111201 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, one hundred million, one hundred eleven thousand, two hundred one".