221120112001100 has 72 divisors (see below), whose sum is σ = 517636258721568. Its totient is φ = 81502850764800.

The previous prime is 221120112001097. The next prime is 221120112001123. The reversal of 221120112001100 is 1100211021122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146643656 + ... + 148143855.

It is an arithmetic number, because the mean of its divisors is an integer number (7189392482244).

Almost surely, 2^{221120112001100} is an apocalyptic number.

221120112001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221120112001100 is an abundant number, since it is smaller than the sum of its proper divisors (296516146720468).

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

221120112001100 is a wasteful number, since it uses less digits than its factorization.

221120112001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294788115 (or 294788108 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221120112001100 its reverse (1100211021122), we get a palindrome (222220323022222).

The spelling of 221120112001100 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred twelve million, one thousand, one hundred".