221122002121100 has 36 divisors (see below), whose sum is σ = 479836528876824. Its totient is φ = 88448471950080.

The previous prime is 221122002121091. The next prime is 221122002121151. The reversal of 221122002121100 is 1121200221122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23862644 + ... + 31806756.

Almost surely, 2^{221122002121100} is an apocalyptic number.

221122002121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221122002121100 is an abundant number, since it is smaller than the sum of its proper divisors (258714526755724).

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

221122002121100 is a wasteful number, since it uses less digits than its factorization.

221122002121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8222474 (or 8222467 counting only the distinct ones).

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

Adding to 221122002121100 its reverse (1121200221122), we get a palindrome (222243202342222).

The spelling of 221122002121100 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two million, one hundred twenty-one thousand, one hundred".