221222022149 has 2 divisors, whose sum is σ = 221222022150. Its totient is φ = 221222022148.

The previous prime is 221222022103. The next prime is 221222022163. The reversal of 221222022149 is 941220222122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131112789025 + 90109233124 = 362095^2 + 300182^2 .

It is a cyclic number.

It is not a de Polignac number, because 221222022149 - 2³² = 216927054853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221222022199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611011074 + 110611011075.

It is an arithmetic number, because the mean of its divisors is an integer number (110611011075).

Almost surely, 2^221222022149 is an apocalyptic number.

It is an amenable number.

221222022149 is a deficient number, since it is larger than the sum of its proper divisors (1).

221222022149 is an equidigital number, since it uses as much as digits as its factorization.

221222022149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 221222022149 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty-two thousand, one hundred forty-nine".