222121210120151 has 2 divisors, whose sum is σ = 222121210120152. Its totient is φ = 222121210120150.

The previous prime is 222121210120081. The next prime is 222121210120309. The reversal of 222121210120151 is 151021012121222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222121210120151 - 2¹⁸ = 222121209858007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222121210120351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060605060075 + 111060605060076.

It is an arithmetic number, because the mean of its divisors is an integer number (111060605060076).

Almost surely, 2^{222121210120151} is an apocalyptic number.

222121210120151 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121210120151 is an equidigital number, since it uses as much as digits as its factorization.

222121210120151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 23.

Adding to 222121210120151 its reverse (151021012121222), we get a palindrome (373142222241373).

The spelling of 222121210120151 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred ten million, one hundred twenty thousand, one hundred fifty-one".