1220211220229 has 2 divisors, whose sum is σ = 1220211220230. Its totient is φ = 1220211220228.

The previous prime is 1220211220219. The next prime is 1220211220253. The reversal of 1220211220229 is 9220221120221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1206801117025 + 13410103204 = 1098545^2 + 115802^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220211220229 - 2⁴ = 1220211220213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220211220198 and 1220211220207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220211220219) 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, 610105610114 + 610105610115.

It is an arithmetic number, because the mean of its divisors is an integer number (610105610115).

Almost surely, 2^{1220211220229} is an apocalyptic number.

It is an amenable number.

1220211220229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220211220229 is an equidigital number, since it uses as much as digits as its factorization.

1220211220229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 1220211220229 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred twenty thousand, two hundred twenty-nine".