221220201200022 has 56 divisors (see below), whose sum is σ = 526783616424216. Its totient is φ = 69402416054976.

The previous prime is 221220201199999. The next prime is 221220201200081. The reversal of 221220201200022 is 220002102022122.

221220201200022 is a `hidden beast` number, since 2 + 21 + 220 + 201 + 200 + 0 + 22 = 666.

221220201200022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 221220201199968 and 221220201200004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4462579128 + ... + 4462628699.

Almost surely, 2^{221220201200022} is an apocalyptic number.

221220201200022 is an abundant number, since it is smaller than the sum of its proper divisors (305563415224194).

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

221220201200022 is an equidigital number, since it uses as much as digits as its factorization.

221220201200022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8925207864 (or 8925207849 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221220201200022 its reverse (220002102022122), we get a palindrome (441222303222144).

The spelling of 221220201200022 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred one million, two hundred thousand, twenty-two".