221122220110100 has 72 divisors (see below), whose sum is σ = 480952012205280. Its totient is φ = 88243244449920.

The previous prime is 221122220110087. The next prime is 221122220110151. The reversal of 221122220110100 is 1011022221122.

It is a super-2 number, since 2×221122220110100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80162027 + ... + 82874573.

Almost surely, 2^{221122220110100} is an apocalyptic number.

221122220110100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221122220110100 is an abundant number, since it is smaller than the sum of its proper divisors (259829792095180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221122220110100 is a wasteful number, since it uses less digits than its factorization.

221122220110100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714457 (or 2714450 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221122220110100 its reverse (1011022221122), we get a palindrome (222133242331222).

The spelling of 221122220110100 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty million, one hundred ten thousand, one hundred".