1222728141 has 8 divisors (see below), whose sum is σ = 1646132800. Its totient is φ = 807237792.

The previous prime is 1222728097. The next prime is 1222728161. The reversal of 1222728141 is 1418272221.

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

It is not a de Polignac number, because 1222728141 - 2⁹ = 1222727629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1222728099 and 1222728108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222728161) 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, 1978216 + ... + 1978833.

It is an arithmetic number, because the mean of its divisors is an integer number (205766600).

Almost surely, 2^1222728141 is an apocalyptic number.

It is an amenable number.

1222728141 is a deficient number, since it is larger than the sum of its proper divisors (423404659).

1222728141 is a wasteful number, since it uses less digits than its factorization.

1222728141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957155.

The product of its digits is 3584, while the sum is 30.

The square root of 1222728141 is about 34967.5298098107. The cubic root of 1222728141 is about 1069.3256125437.

The spelling of 1222728141 in words is "one billion, two hundred twenty-two million, seven hundred twenty-eight thousand, one hundred forty-one".