272221126 has 16 divisors (see below), whose sum is σ = 411156288. Its totient is φ = 135172800.

The previous prime is 272221121. The next prime is 272221141. The reversal of 272221126 is 621122272.

It is a self number, because there is not a number n which added to its sum of digits gives 272221126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272221121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227586 + ... + 228778.

It is an arithmetic number, because the mean of its divisors is an integer number (25697268).

Almost surely, 2^272221126 is an apocalyptic number.

272221126 is a deficient number, since it is larger than the sum of its proper divisors (138935162).

272221126 is a wasteful number, since it uses less digits than its factorization.

272221126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887.

The product of its digits is 1344, while the sum is 25.

The square root of 272221126 is about 16499.1250071026. The cubic root of 272221126 is about 648.0978917166.

Adding to 272221126 its reverse (621122272), we get a palindrome (893343398).

The spelling of 272221126 in words is "two hundred seventy-two million, two hundred twenty-one thousand, one hundred twenty-six".