221222002101100 has 216 divisors, whose sum is σ = 649427919584864. Its totient is φ = 63648288000000.

The previous prime is 221222002101049. The next prime is 221222002101103. The reversal of 221222002101100 is 1101200222122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221222002101103) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 99353901 + ... + 101556100.

Almost surely, 2^{221222002101100} is an apocalyptic number.

221222002101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222002101100 is an abundant number, since it is smaller than the sum of its proper divisors (428205917483764).

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

221222002101100 is a wasteful number, since it uses less digits than its factorization.

221222002101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200910057 (or 200910039 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221222002101100 its reverse (1101200222122), we get a palindrome (222323202323222).

The spelling of 221222002101100 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, two million, one hundred one thousand, one hundred".