2121102827 has 2 divisors, whose sum is σ = 2121102828. Its totient is φ = 2121102826.

The previous prime is 2121102821. The next prime is 2121102899. The reversal of 2121102827 is 7282011212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121102827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121102796 and 2121102805.

It is not a weakly prime, because it can be changed into another prime (2121102821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060551413 + 1060551414.

It is an arithmetic number, because the mean of its divisors is an integer number (1060551414).

Almost surely, 2^2121102827 is an apocalyptic number.

2121102827 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121102827 is an equidigital number, since it uses as much as digits as its factorization.

2121102827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 2121102827 is about 46055.4321117499. The cubic root of 2121102827 is about 1284.8543748331.

The spelling of 2121102827 in words is "two billion, one hundred twenty-one million, one hundred two thousand, eight hundred twenty-seven".