221010212122151 has 2 divisors, whose sum is σ = 221010212122152. Its totient is φ = 221010212122150.

The previous prime is 221010212122099. The next prime is 221010212122159. The reversal of 221010212122151 is 151221212010122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221010212122151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221010212122159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505106061075 + 110505106061076.

It is an arithmetic number, because the mean of its divisors is an integer number (110505106061076).

Almost surely, 2^{221010212122151} is an apocalyptic number.

221010212122151 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010212122151 is an equidigital number, since it uses as much as digits as its factorization.

221010212122151 is an odious number, because the sum of its binary digits is odd.

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

Adding to 221010212122151 its reverse (151221212010122), we get a palindrome (372231424132273).

The spelling of 221010212122151 in words is "two hundred twenty-one trillion, ten billion, two hundred twelve million, one hundred twenty-two thousand, one hundred fifty-one".