2113267021 has 2 divisors, whose sum is σ = 2113267022. Its totient is φ = 2113267020.

The previous prime is 2113266983. The next prime is 2113267027. The reversal of 2113267021 is 1207623112.

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., 1334075625 + 779191396 = 36525^2 + 27914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113267021 - 2¹¹ = 2113264973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113267027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056633510 + 1056633511.

It is an arithmetic number, because the mean of its divisors is an integer number (1056633511).

Almost surely, 2^2113267021 is an apocalyptic number.

It is an amenable number.

2113267021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113267021 is an equidigital number, since it uses as much as digits as its factorization.

2113267021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2113267021 is about 45970.2841083237. The cubic root of 2113267021 is about 1283.2702472090.

The spelling of 2113267021 in words is "two billion, one hundred thirteen million, two hundred sixty-seven thousand, twenty-one".