221073801275 has 24 divisors (see below), whose sum is σ = 288664173120. Its totient is φ = 167489886240.

The previous prime is 221073801271. The next prime is 221073801323. The reversal of 221073801275 is 572108370122.

It is not a de Polignac number, because 221073801275 - 2² = 221073801271 is a prime.

It is a super-2 number, since 2×221073801275² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221073801271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1248404 + ... + 1414446.

It is an arithmetic number, because the mean of its divisors is an integer number (12027673880).

Almost surely, 2^221073801275 is an apocalyptic number.

221073801275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221073801275 is a deficient number, since it is larger than the sum of its proper divisors (67590371845).

221073801275 is a wasteful number, since it uses less digits than its factorization.

221073801275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168875 (or 168870 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 221073801275 in words is "two hundred twenty-one billion, seventy-three million, eight hundred one thousand, two hundred seventy-five".