221122210100 has 36 divisors (see below), whose sum is σ = 523456579968. Its totient is φ = 80408076000.

The previous prime is 221122210081. The next prime is 221122210103. The reversal of 221122210100 is 1012221122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122210103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100508996 + ... + 100511195.

Almost surely, 2^221122210100 is an apocalyptic number.

221122210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221122210100 is an abundant number, since it is smaller than the sum of its proper divisors (302334369868).

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

221122210100 is a wasteful number, since it uses less digits than its factorization.

221122210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201020216 (or 201020209 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221122210100 its reverse (1012221122), we get a palindrome (222134431222).

The spelling of 221122210100 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred ten thousand, one hundred".