1222021129 has 8 divisors (see below), whose sum is σ = 1396807040. Its totient is φ = 1047288096.

The previous prime is 1222021121. The next prime is 1222021133. The reversal of 1222021129 is 9211202221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222021129 - 2³ = 1222021121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222021121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83677 + ... + 97189.

It is an arithmetic number, because the mean of its divisors is an integer number (174600880).

Almost surely, 2^1222021129 is an apocalyptic number.

It is an amenable number.

1222021129 is a deficient number, since it is larger than the sum of its proper divisors (174785911).

1222021129 is a wasteful number, since it uses less digits than its factorization.

1222021129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26439.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1222021129 is about 34957.4187977316. The cubic root of 1222021129 is about 1069.1194691993.

The spelling of 1222021129 in words is "one billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty-nine".