220201021109 has 2 divisors, whose sum is σ = 220201021110. Its totient is φ = 220201021108.

The previous prime is 220201021013. The next prime is 220201021121. The reversal of 220201021109 is 901120102022.

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., 208981551025 + 11219470084 = 457145^2 + 105922^2 .

It is a cyclic number.

It is not a de Polignac number, because 220201021109 - 2³⁶ = 151481544373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220201021129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100510554 + 110100510555.

It is an arithmetic number, because the mean of its divisors is an integer number (110100510555).

Almost surely, 2^220201021109 is an apocalyptic number.

It is an amenable number.

220201021109 is a deficient number, since it is larger than the sum of its proper divisors (1).

220201021109 is an equidigital number, since it uses as much as digits as its factorization.

220201021109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 220201021109 in words is "two hundred twenty billion, two hundred one million, twenty-one thousand, one hundred nine".