1220210029 has 2 divisors, whose sum is σ = 1220210030. Its totient is φ = 1220210028.

The previous prime is 1220210009. The next prime is 1220210051. The reversal of 1220210029 is 9200120221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1099254025 + 120956004 = 33155^2 + 10998^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220210029 - 2²¹ = 1218112877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220209988 and 1220210015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220210009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610105014 + 610105015.

It is an arithmetic number, because the mean of its divisors is an integer number (610105015).

Almost surely, 2^1220210029 is an apocalyptic number.

It is an amenable number.

1220210029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220210029 is an equidigital number, since it uses as much as digits as its factorization.

1220210029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1220210029 is about 34931.5048201477. The cubic root of 1220210029 is about 1068.5910441799.

The spelling of 1220210029 in words is "one billion, two hundred twenty million, two hundred ten thousand, twenty-nine".