2100331109 has 2 divisors, whose sum is σ = 2100331110. Its totient is φ = 2100331108.

The previous prime is 2100331049. The next prime is 2100331133. The reversal of 2100331109 is 9011330012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2085292225 + 15038884 = 45665^2 + 3878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100331109 is a prime.

It is a super-2 number, since 2×2100331109² = 8822781534866339762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100331609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050165554 + 1050165555.

It is an arithmetic number, because the mean of its divisors is an integer number (1050165555).

Almost surely, 2^2100331109 is an apocalyptic number.

It is an amenable number.

2100331109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100331109 is an equidigital number, since it uses as much as digits as its factorization.

2100331109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 2100331109 is about 45829.3695025363. The cubic root of 2100331109 is about 1280.6464648294.

The spelling of 2100331109 in words is "two billion, one hundred million, three hundred thirty-one thousand, one hundred nine".