21234153007 has 2 divisors, whose sum is σ = 21234153008. Its totient is φ = 21234153006.

The previous prime is 21234152971. The next prime is 21234153023. The reversal of 21234153007 is 70035143212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21234153007 - 2¹⁵ = 21234120239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21234153107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10617076503 + 10617076504.

It is an arithmetic number, because the mean of its divisors is an integer number (10617076504).

Almost surely, 2^21234153007 is an apocalyptic number.

21234153007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21234153007 is an equidigital number, since it uses as much as digits as its factorization.

21234153007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 21234153007 its reverse (70035143212), we get a palindrome (91269296219).

The spelling of 21234153007 in words is "twenty-one billion, two hundred thirty-four million, one hundred fifty-three thousand, seven".