22121331151 has 2 divisors, whose sum is σ = 22121331152. Its totient is φ = 22121331150.

The previous prime is 22121331149. The next prime is 22121331173. The reversal of 22121331151 is 15113312122.

It is an a-pointer prime, because the next prime (22121331173) can be obtained adding 22121331151 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22121331151 - 2¹ = 22121331149 is a prime.

Together with 22121331149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121431151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060665575 + 11060665576.

It is an arithmetic number, because the mean of its divisors is an integer number (11060665576).

Almost surely, 2^22121331151 is an apocalyptic number.

22121331151 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121331151 is an equidigital number, since it uses as much as digits as its factorization.

22121331151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 22.

Adding to 22121331151 its reverse (15113312122), we get a palindrome (37234643273).

The spelling of 22121331151 in words is "twenty-two billion, one hundred twenty-one million, three hundred thirty-one thousand, one hundred fifty-one".