21120201120222 has 24 divisors (see below), whose sum is σ = 45760550697576. Its totient is φ = 7040049357456.

The previous prime is 21120201120203. The next prime is 21120201120223. The reversal of 21120201120222 is 22202110202112.

It is a happy number.

21120201120222 is a `hidden beast` number, since 2 + 1 + 120 + 201 + 120 + 222 = 666.

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 = 21120201120195 and 21120201120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120201120223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7305568 + ... + 9778124.

It is an arithmetic number, because the mean of its divisors is an integer number (1906689612399).

Almost surely, 2^{21120201120222} is an apocalyptic number.

21120201120222 is an abundant number, since it is smaller than the sum of its proper divisors (24640349577354).

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

21120201120222 is a wasteful number, since it uses less digits than its factorization.

21120201120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947112 (or 2947109 counting only the distinct ones).

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

Adding to 21120201120222 its reverse (22202110202112), we get a palindrome (43322311322334).

The spelling of 21120201120222 in words is "twenty-one trillion, one hundred twenty billion, two hundred one million, one hundred twenty thousand, two hundred twenty-two".