22001306851 has 2 divisors, whose sum is σ = 22001306852. Its totient is φ = 22001306850.

The previous prime is 22001306843. The next prime is 22001306981. The reversal of 22001306851 is 15860310022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22001306851 - 2³ = 22001306843 is a prime.

It is not a weakly prime, because it can be changed into another prime (22001306801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000653425 + 11000653426.

It is an arithmetic number, because the mean of its divisors is an integer number (11000653426).

Almost surely, 2^22001306851 is an apocalyptic number.

22001306851 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001306851 is an equidigital number, since it uses as much as digits as its factorization.

22001306851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 22001306851 its reverse (15860310022), we get a palindrome (37861616873).

The spelling of 22001306851 in words is "twenty-two billion, one million, three hundred six thousand, eight hundred fifty-one".