220221012011201 has 4 divisors (see below), whose sum is σ = 220221042290004. Its totient is φ = 220220981732400.

The previous prime is 220221012011197. The next prime is 220221012011213. The reversal of 220221012011201 is 102110210122022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 175902500454976 + 44318511556225 = 13262824^2 + 6657215^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221012011201 - 2² = 220221012011197 is a prime.

It is a super-2 number, since 2×220221012011201² (a number of 29 digits) contains 22 as substring.

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 220221012011201.

It is not an unprimeable number, because it can be changed into a prime (220221012011501) 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 3 ways as a sum of consecutive naturals, for example, 3074591 + ... + 21210731.

It is an arithmetic number, because the mean of its divisors is an integer number (55055260572501).

Almost surely, 2^{220221012011201} is an apocalyptic number.

It is an amenable number.

220221012011201 is a deficient number, since it is larger than the sum of its proper divisors (30278803).

220221012011201 is a wasteful number, since it uses less digits than its factorization.

220221012011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30278802.

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

Adding to 220221012011201 its reverse (102110210122022), we get a palindrome (322331222133223).

The spelling of 220221012011201 in words is "two hundred twenty trillion, two hundred twenty-one billion, twelve million, eleven thousand, two hundred one".