221066660122 has 32 divisors (see below), whose sum is σ = 413485922304. Its totient is φ = 86116834800.

The previous prime is 221066660107. The next prime is 221066660147.

221066660122 is nontrivially palindromic in base 10.

It is a super-4 number, since 4×221066660122⁴ (a number of 46 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945547 + ... + 1155937.

It is an arithmetic number, because the mean of its divisors is an integer number (12921435072).

Almost surely, 2^221066660122 is an apocalyptic number.

221066660122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221066660122 is a deficient number, since it is larger than the sum of its proper divisors (192419262182).

221066660122 is a wasteful number, since it uses less digits than its factorization.

221066660122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217234.

The product of its (nonzero) digits is 20736, while the sum is 34.

It can be divided in two parts, 221066 and 660122, that added together give a palindrome (881188).

The spelling of 221066660122 in words is "two hundred twenty-one billion, sixty-six million, six hundred sixty thousand, one hundred twenty-two".