222121021101100 has 36 divisors (see below), whose sum is σ = 525821035409208. Its totient is φ = 80771280400000.

The previous prime is 222121021101047. The next prime is 222121021101131. The reversal of 222121021101100 is 1101120121222.

It is a super-2 number, since 2×222121021101100² (a number of 29 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 100964099401 + ... + 100964101600.

It is an arithmetic number, because the mean of its divisors is an integer number (14606139872478).

Almost surely, 2^{222121021101100} is an apocalyptic number.

222121021101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222121021101100 is an abundant number, since it is smaller than the sum of its proper divisors (303700014308108).

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

222121021101100 is a wasteful number, since it uses less digits than its factorization.

222121021101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201928201026 (or 201928201019 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 222121021101100 its reverse (1101120121222), we get a palindrome (223222141222322).

The spelling of 222121021101100 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twenty-one million, one hundred one thousand, one hundred".