2127385310621 has 2 divisors, whose sum is σ = 2127385310622. Its totient is φ = 2127385310620.

The previous prime is 2127385310551. The next prime is 2127385310623. The reversal of 2127385310621 is 1260135837212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1548357148900 + 579028161721 = 1244330^2 + 760939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2127385310621 - 2²² = 2127381116317 is a prime.

Together with 2127385310623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2127385310623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063692655310 + 1063692655311.

It is an arithmetic number, because the mean of its divisors is an integer number (1063692655311).

Almost surely, 2^{2127385310621} is an apocalyptic number.

It is an amenable number.

2127385310621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2127385310621 is an equidigital number, since it uses as much as digits as its factorization.

2127385310621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 2127385310621 in words is "two trillion, one hundred twenty-seven billion, three hundred eighty-five million, three hundred ten thousand, six hundred twenty-one".