2123012147 has 2 divisors, whose sum is σ = 2123012148. Its totient is φ = 2123012146.

The previous prime is 2123012119. The next prime is 2123012201. The reversal of 2123012147 is 7412103212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2123012147 - 2¹² = 2123008051 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (2123012107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061506073 + 1061506074.

It is an arithmetic number, because the mean of its divisors is an integer number (1061506074).

Almost surely, 2^2123012147 is an apocalyptic number.

2123012147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123012147 is an equidigital number, since it uses as much as digits as its factorization.

2123012147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2123012147 is about 46076.1559486032. The cubic root of 2123012147 is about 1285.2397816454.

Adding to 2123012147 its reverse (7412103212), we get a palindrome (9535115359).

The spelling of 2123012147 in words is "two billion, one hundred twenty-three million, twelve thousand, one hundred forty-seven".