222120121001100 has 288 divisors, whose sum is σ = 765412643788800. Its totient is φ = 49690092856320.

The previous prime is 222120121001057. The next prime is 222120121001153. The reversal of 222120121001100 is 1100121021222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 222120121001100.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18127549 + ... + 27800148.

Almost surely, 2^{222120121001100} is an apocalyptic number.

222120121001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120121001100 is an abundant number, since it is smaller than the sum of its proper divisors (543292522787700).

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

222120121001100 is a wasteful number, since it uses less digits than its factorization.

222120121001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45927782 (or 45927761 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222120121001100 its reverse (1100121021222), we get a palindrome (223220242022322).

The spelling of 222120121001100 in words is "two hundred twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, one thousand, one hundred".