2101433381 has 2 divisors, whose sum is σ = 2101433382. Its totient is φ = 2101433380.

The previous prime is 2101433287. The next prime is 2101433401. The reversal of 2101433381 is 1833341012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2101397281 + 36100 = 45841^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101433381 - 2¹⁴ = 2101416997 is a prime.

It is a super-2 number, since 2×2101433381² = 8832044509562182322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101433381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101433881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050716690 + 1050716691.

It is an arithmetic number, because the mean of its divisors is an integer number (1050716691).

Almost surely, 2^2101433381 is an apocalyptic number.

It is an amenable number.

2101433381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101433381 is an equidigital number, since it uses as much as digits as its factorization.

2101433381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2101433381 is about 45841.3937506267. The cubic root of 2101433381 is about 1280.8704571105.

Adding to 2101433381 its reverse (1833341012), we get a palindrome (3934774393).

The spelling of 2101433381 in words is "two billion, one hundred one million, four hundred thirty-three thousand, three hundred eighty-one".