221275572122 has 16 divisors (see below), whose sum is σ = 362749270752. Its totient is φ = 100395924720.

The previous prime is 221275572121. The next prime is 221275572151.

221275572122 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (221275572121) 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, 9181733 + ... + 9205800.

It is an arithmetic number, because the mean of its divisors is an integer number (22671829422).

Almost surely, 2^221275572122 is an apocalyptic number.

221275572122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221275572122 is a deficient number, since it is larger than the sum of its proper divisors (141473698630).

221275572122 is a wasteful number, since it uses less digits than its factorization.

221275572122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18388093.

The product of its digits is 78400, while the sum is 38.

It can be divided in two parts, 221275 and 572122, that added together give a palindrome (793397).

The spelling of 221275572122 in words is "two hundred twenty-one billion, two hundred seventy-five million, five hundred seventy-two thousand, one hundred twenty-two".