221201102121011 has 8 divisors (see below), whose sum is σ = 221308018095360. Its totient is φ = 221094193402368.

The previous prime is 221201102120969. The next prime is 221201102121053. The reversal of 221201102121011 is 110121201102122.

It is an interprime number because it is at equal distance from previous prime (221201102120969) and next prime (221201102121053).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221201102121011 - 2¹⁴ = 221201102104627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221201102121211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59677145 + ... + 63275301.

It is an arithmetic number, because the mean of its divisors is an integer number (27663502261920).

Almost surely, 2^{221201102121011} is an apocalyptic number.

221201102121011 is a deficient number, since it is larger than the sum of its proper divisors (106915974349).

221201102121011 is a wasteful number, since it uses less digits than its factorization.

221201102121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627853.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221201102121011 its reverse (110121201102122), we get a palindrome (331322303223133).

The spelling of 221201102121011 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred two million, one hundred twenty-one thousand, eleven".