220021120001 has 2 divisors, whose sum is σ = 220021120002. Its totient is φ = 220021120000.

The previous prime is 220021119977. The next prime is 220021120013. The reversal of 220021120001 is 100021120022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193051269376 + 26969850625 = 439376^2 + 164225^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021120001 - 2⁶ = 220021119937 is a prime.

It is not a weakly prime, because it can be changed into another prime (220021120901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010560000 + 110010560001.

It is an arithmetic number, because the mean of its divisors is an integer number (110010560001).

Almost surely, 2^220021120001 is an apocalyptic number.

It is an amenable number.

220021120001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021120001 is an equidigital number, since it uses as much as digits as its factorization.

220021120001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220021120001 its reverse (100021120022), we get a palindrome (320042240023).

The spelling of 220021120001 in words is "two hundred twenty billion, twenty-one million, one hundred twenty thousand, one".