2101351123 has 2 divisors, whose sum is σ = 2101351124. Its totient is φ = 2101351122.

The previous prime is 2101351121. The next prime is 2101351177. The reversal of 2101351123 is 3211531012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101351123 - 2¹ = 2101351121 is a prime.

It is a super-2 number, since 2×2101351123² = 8831353084266722258, which contains 22 as substring.

Together with 2101351121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2101351123.

It is not a weakly prime, because it can be changed into another prime (2101351121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050675561 + 1050675562.

It is an arithmetic number, because the mean of its divisors is an integer number (1050675562).

Almost surely, 2^2101351123 is an apocalyptic number.

2101351123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101351123 is an equidigital number, since it uses as much as digits as its factorization.

2101351123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2101351123 is about 45840.4965396319. The cubic root of 2101351123 is about 1280.8537441980.

Adding to 2101351123 its reverse (3211531012), we get a palindrome (5312882135).

The spelling of 2101351123 in words is "two billion, one hundred one million, three hundred fifty-one thousand, one hundred twenty-three".