21202424051 has 2 divisors, whose sum is σ = 21202424052. Its totient is φ = 21202424050.

The previous prime is 21202424039. The next prime is 21202424063. The reversal of 21202424051 is 15042420212.

It is a balanced prime because it is at equal distance from previous prime (21202424039) and next prime (21202424063).

It is a cyclic number.

It is not a de Polignac number, because 21202424051 - 2¹⁰ = 21202423027 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202424011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601212025 + 10601212026.

It is an arithmetic number, because the mean of its divisors is an integer number (10601212026).

Almost surely, 2^21202424051 is an apocalyptic number.

21202424051 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202424051 is an equidigital number, since it uses as much as digits as its factorization.

21202424051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 21202424051 its reverse (15042420212), we get a palindrome (36244844263).

The spelling of 21202424051 in words is "twenty-one billion, two hundred two million, four hundred twenty-four thousand, fifty-one".