2196821051 has 2 divisors, whose sum is σ = 2196821052. Its totient is φ = 2196821050.

The previous prime is 2196821027. The next prime is 2196821063. The reversal of 2196821051 is 1501286912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2196821051 - 2¹⁴ = 2196804667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2196821251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098410525 + 1098410526.

It is an arithmetic number, because the mean of its divisors is an integer number (1098410526).

Almost surely, 2^2196821051 is an apocalyptic number.

2196821051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2196821051 is an equidigital number, since it uses as much as digits as its factorization.

2196821051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 2196821051 is about 46870.2576374400. The cubic root of 2196821051 is about 1299.9647033809.

The spelling of 2196821051 in words is "two billion, one hundred ninety-six million, eight hundred twenty-one thousand, fifty-one".