1222554145 has 8 divisors (see below), whose sum is σ = 1544279040. Its totient is φ = 926567280.

The previous prime is 1222554143. The next prime is 1222554169. The reversal of 1222554145 is 5414552221.

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

It is not a de Polignac number, because 1222554145 - 2¹ = 1222554143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222554143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6434401 + ... + 6434590.

It is an arithmetic number, because the mean of its divisors is an integer number (193034880).

Almost surely, 2^1222554145 is an apocalyptic number.

It is an amenable number.

1222554145 is a deficient number, since it is larger than the sum of its proper divisors (321724895).

1222554145 is a wasteful number, since it uses less digits than its factorization.

1222554145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12869015.

The product of its digits is 16000, while the sum is 31.

The square root of 1222554145 is about 34965.0417560168. The cubic root of 1222554145 is about 1069.2748879388.

The spelling of 1222554145 in words is "one billion, two hundred twenty-two million, five hundred fifty-four thousand, one hundred forty-five".