221120012120202 has 112 divisors (see below), whose sum is σ = 548607904511688. Its totient is φ = 66377489333760.

The previous prime is 221120012120191. The next prime is 221120012120237. The reversal of 221120012120202 is 202021210021122.

It is a happy number.

221120012120202 is a `hidden beast` number, since 221 + 1 + 200 + 1 + 21 + 20 + 202 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 77987956304241 + 143132055815961 = 8831079^2 + 11963781^2 .

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 55 ways as a sum of consecutive naturals, for example, 141492883 + ... + 143047110.

Almost surely, 2^{221120012120202} is an apocalyptic number.

221120012120202 is an abundant number, since it is smaller than the sum of its proper divisors (327487892391486).

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

221120012120202 is a wasteful number, since it uses less digits than its factorization.

221120012120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284540067 (or 284540052 counting only the distinct ones).

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

Adding to 221120012120202 its reverse (202021210021122), we get a palindrome (423141222141324).

The spelling of 221120012120202 in words is "two hundred twenty-one trillion, one hundred twenty billion, twelve million, one hundred twenty thousand, two hundred two".