2120010220109 has 2 divisors, whose sum is σ = 2120010220110. Its totient is φ = 2120010220108.

The previous prime is 2120010220021. The next prime is 2120010220127. The reversal of 2120010220109 is 9010220100212.

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., 2047823964484 + 72186255625 = 1431022^2 + 268675^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120010220109 - 2¹⁶ = 2120010154573 is a prime.

It is a super-2 number, since 2×2120010220109² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120010220169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060005110054 + 1060005110055.

It is an arithmetic number, because the mean of its divisors is an integer number (1060005110055).

Almost surely, 2^{2120010220109} is an apocalyptic number.

It is an amenable number.

2120010220109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120010220109 is an equidigital number, since it uses as much as digits as its factorization.

2120010220109 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 2120010220109 in words is "two trillion, one hundred twenty billion, ten million, two hundred twenty thousand, one hundred nine".