2100154223 has 2 divisors, whose sum is σ = 2100154224. Its totient is φ = 2100154222.

The previous prime is 2100154213. The next prime is 2100154319. The reversal of 2100154223 is 3224510012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100154223 - 2⁴ = 2100154207 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100154195 and 2100154204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100154213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050077111 + 1050077112.

It is an arithmetic number, because the mean of its divisors is an integer number (1050077112).

Almost surely, 2^2100154223 is an apocalyptic number.

2100154223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100154223 is an equidigital number, since it uses as much as digits as its factorization.

2100154223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2100154223 is about 45827.4396295495. The cubic root of 2100154223 is about 1280.6105125948.

Adding to 2100154223 its reverse (3224510012), we get a palindrome (5324664235).

The spelling of 2100154223 in words is "two billion, one hundred million, one hundred fifty-four thousand, two hundred twenty-three".