220023101 has 2 divisors, whose sum is σ = 220023102. Its totient is φ = 220023100.

The previous prime is 220023079. The next prime is 220023113. The reversal of 220023101 is 101320022.

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., 143880025 + 76143076 = 11995^2 + 8726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220023101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220023301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110011550 + 110011551.

It is an arithmetic number, because the mean of its divisors is an integer number (110011551).

Almost surely, 2^220023101 is an apocalyptic number.

It is an amenable number.

220023101 is a deficient number, since it is larger than the sum of its proper divisors (1).

220023101 is an equidigital number, since it uses as much as digits as its factorization.

220023101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 220023101 is about 14833.1756883009. The cubic root of 220023101 is about 603.7022026925.

Adding to 220023101 its reverse (101320022), we get a palindrome (321343123).

The spelling of 220023101 in words is "two hundred twenty million, twenty-three thousand, one hundred one".