221121100211120 has 40 divisors (see below), whose sum is σ = 514107281062320. Its totient is φ = 88448315685120.

The previous prime is 221121100211111. The next prime is 221121100211171. The reversal of 221121100211120 is 21112001121122.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73461335 + ... + 76412105.

It is an arithmetic number, because the mean of its divisors is an integer number (12852682026558).

Almost surely, 2^{221121100211120} is an apocalyptic number.

221121100211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221121100211120 is an abundant number, since it is smaller than the sum of its proper divisors (292986180851200).

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

221121100211120 is a wasteful number, since it uses less digits than its factorization.

221121100211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3887493 (or 3887487 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221121100211120 its reverse (21112001121122), we get a palindrome (242233101332242).

The spelling of 221121100211120 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, one hundred million, two hundred eleven thousand, one hundred twenty".