1223021029 has 2 divisors, whose sum is σ = 1223021030. Its totient is φ = 1223021028.

The previous prime is 1223021003. The next prime is 1223021047. The reversal of 1223021029 is 9201203221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1204228804 + 18792225 = 34702^2 + 4335^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223021029 - 2²¹ = 1220923877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223021069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611510514 + 611510515.

It is an arithmetic number, because the mean of its divisors is an integer number (611510515).

Almost surely, 2^1223021029 is an apocalyptic number.

It is an amenable number.

1223021029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223021029 is an equidigital number, since it uses as much as digits as its factorization.

1223021029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1223021029 is about 34971.7175586216. The cubic root of 1223021029 is about 1069.4109865599.

The spelling of 1223021029 in words is "one billion, two hundred twenty-three million, twenty-one thousand, twenty-nine".