21120000020222 has 16 divisors (see below), whose sum is σ = 33545091712320. Its totient is φ = 9938360644608.

The previous prime is 21120000020221. The next prime is 21120000020261. The reversal of 21120000020222 is 22202000002112.

It is a junction number, because it is equal to n+sod(n) for n = 21120000020197 and 21120000020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120000020221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13724147 + ... + 15185262.

It is an arithmetic number, because the mean of its divisors is an integer number (2096568232020).

Almost surely, 2^{21120000020222} is an apocalyptic number.

21120000020222 is a deficient number, since it is larger than the sum of its proper divisors (12425091692098).

21120000020222 is a wasteful number, since it uses less digits than its factorization.

21120000020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28930915.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21120000020222 its reverse (22202000002112), we get a palindrome (43322000022334).

The spelling of 21120000020222 in words is "twenty-one trillion, one hundred twenty billion, twenty thousand, two hundred twenty-two".