220021032109 has 2 divisors, whose sum is σ = 220021032110. Its totient is φ = 220021032108.

The previous prime is 220021032047. The next prime is 220021032149. The reversal of 220021032109 is 901230120022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118990502500 + 101030529609 = 344950^2 + 317853^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021032109 - 2²¹ = 220018934957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220021032109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220021032149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010516054 + 110010516055.

It is an arithmetic number, because the mean of its divisors is an integer number (110010516055).

Almost surely, 2^220021032109 is an apocalyptic number.

It is an amenable number.

220021032109 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021032109 is an equidigital number, since it uses as much as digits as its factorization.

220021032109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 220021032109 in words is "two hundred twenty billion, twenty-one million, thirty-two thousand, one hundred nine".