221100001100122 has 4 divisors (see below), whose sum is σ = 331650001650186. Its totient is φ = 110550000550060.

The previous prime is 221100001100107. The next prime is 221100001100123. The reversal of 221100001100122 is 221001100001122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 217289740044001 + 3810261056121 = 14740751^2 + 1951989^2 .

It is a super-2 number, since 2×221100001100122² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221100001100123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55275000275029 + ... + 55275000275032.

Almost surely, 2^{221100001100122} is an apocalyptic number.

221100001100122 is a deficient number, since it is larger than the sum of its proper divisors (110550000550064).

221100001100122 is a wasteful number, since it uses less digits than its factorization.

221100001100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110550000550063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221100001100122 its reverse (221001100001122), we get a palindrome (442101101101244).

The spelling of 221100001100122 in words is "two hundred twenty-one trillion, one hundred billion, one million, one hundred thousand, one hundred twenty-two".