221266662122 has 32 divisors (see below), whose sum is σ = 375649933824. Its totient is φ = 96837249600.

The previous prime is 221266662121. The next prime is 221266662161.

221266662122 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×221266662122² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221266662121) 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 15 ways as a sum of consecutive naturals, for example, 689093 + ... + 957800.

It is an arithmetic number, because the mean of its divisors is an integer number (11739060432).

Almost surely, 2^221266662122 is an apocalyptic number.

221266662122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221266662122 is a deficient number, since it is larger than the sum of its proper divisors (154383271702).

221266662122 is a wasteful number, since it uses less digits than its factorization.

221266662122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647134.

The product of its digits is 82944, while the sum is 38.

It can be divided in two parts, 221266 and 662122, that added together give a palindrome (883388).

The spelling of 221266662122 in words is "two hundred twenty-one billion, two hundred sixty-six million, six hundred sixty-two thousand, one hundred twenty-two".