3221212120229 has 2 divisors, whose sum is σ = 3221212120230. Its totient is φ = 3221212120228.

The previous prime is 3221212120199. The next prime is 3221212120253. The reversal of 3221212120229 is 9220212121223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3157355841025 + 63856279204 = 1776895^2 + 252698^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221212120229 - 2⁴⁰ = 2121700492453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221212120829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610606060114 + 1610606060115.

It is an arithmetic number, because the mean of its divisors is an integer number (1610606060115).

Almost surely, 2^{3221212120229} is an apocalyptic number.

It is an amenable number.

3221212120229 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221212120229 is an equidigital number, since it uses as much as digits as its factorization.

3221212120229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 3221212120229 in words is "three trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twenty thousand, two hundred twenty-nine".