22121202151 has 2 divisors, whose sum is σ = 22121202152. Its totient is φ = 22121202150.

The previous prime is 22121202139. The next prime is 22121202203. The reversal of 22121202151 is 15120212122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22121202151 - 2¹¹ = 22121200103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121232151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060601075 + 11060601076.

It is an arithmetic number, because the mean of its divisors is an integer number (11060601076).

Almost surely, 2^22121202151 is an apocalyptic number.

22121202151 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121202151 is an equidigital number, since it uses as much as digits as its factorization.

22121202151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 22121202151 its reverse (15120212122), we get a palindrome (37241414273).

The spelling of 22121202151 in words is "twenty-two billion, one hundred twenty-one million, two hundred two thousand, one hundred fifty-one".