221321020120200 has 576 divisors, whose sum is σ = 997956607939200. Its totient is φ = 42451184332800.

The previous prime is 221321020120199. The next prime is 221321020120223. The reversal of 221321020120200 is 2021020123122.

221321020120200 is a `hidden beast` number, since 2 + 2 + 1 + 321 + 0 + 20 + 120 + 200 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 59614845 + ... + 63218444.

It is an arithmetic number, because the mean of its divisors is an integer number (1732563555450).

Almost surely, 2^{221321020120200} is an apocalyptic number.

221321020120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221321020120200 is an abundant number, since it is smaller than the sum of its proper divisors (776635587819000).

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

221321020120200 is a wasteful number, since it uses less digits than its factorization.

221321020120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122833342 (or 122833330 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221321020120200 its reverse (2021020123122), we get a palindrome (223342040243322).

The spelling of 221321020120200 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, twenty million, one hundred twenty thousand, two hundred".