220201221101 has 4 divisors (see below), whose sum is σ = 222221415900. Its totient is φ = 218181026304.

The previous prime is 220201221089. The next prime is 220201221103. The reversal of 220201221101 is 101122102022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185269984900 + 34931236201 = 430430^2 + 186899^2 .

It is a cyclic number.

It is not a de Polignac number, because 220201221101 - 2¹⁰ = 220201220077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220201221103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010097236 + ... + 1010097453.

It is an arithmetic number, because the mean of its divisors is an integer number (55555353975).

Almost surely, 2^220201221101 is an apocalyptic number.

It is an amenable number.

220201221101 is a deficient number, since it is larger than the sum of its proper divisors (2020194799).

220201221101 is a wasteful number, since it uses less digits than its factorization.

220201221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020194798.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220201221101 its reverse (101122102022), we get a palindrome (321323323123).

The spelling of 220201221101 in words is "two hundred twenty billion, two hundred one million, two hundred twenty-one thousand, one hundred one".