221121012202200 has 192 divisors, whose sum is σ = 830878955164800. Its totient is φ = 53605093852800.

The previous prime is 221121012202163. The next prime is 221121012202213. The reversal of 221121012202200 is 2202210121122.

It is a happy number.

221121012202200 is a `hidden beast` number, since 2 + 2 + 11 + 210 + 1 + 220 + 220 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1861228582 + ... + 1861347381.

It is an arithmetic number, because the mean of its divisors is an integer number (4327494558150).

Almost surely, 2^{221121012202200} is an apocalyptic number.

221121012202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221121012202200 is an abundant number, since it is smaller than the sum of its proper divisors (609757942962600).

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

221121012202200 is a wasteful number, since it uses less digits than its factorization.

221121012202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722575999 (or 3722575984 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221121012202200 its reverse (2202210121122), we get a palindrome (223323222323322).

The spelling of 221121012202200 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twelve million, two hundred two thousand, two hundred".