21101120002222 has 12 divisors (see below), whose sum is σ = 34273712666880. Its totient is φ = 9738978462408.

The previous prime is 21101120002217. The next prime is 21101120002223. The reversal of 21101120002222 is 22220002110112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21101120002196 and 21101120002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101120002223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31214674222 + ... + 31214674897.

It is an arithmetic number, because the mean of its divisors is an integer number (2856142722240).

Almost surely, 2^{21101120002222} is an apocalyptic number.

21101120002222 is a deficient number, since it is larger than the sum of its proper divisors (13172592664658).

21101120002222 is a wasteful number, since it uses less digits than its factorization.

21101120002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62429349147 (or 62429349134 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21101120002222 its reverse (22220002110112), we get a palindrome (43321122112334).

The spelling of 21101120002222 in words is "twenty-one trillion, one hundred one billion, one hundred twenty million, two thousand, two hundred twenty-two".