2221021102122 has 96 divisors (see below), whose sum is σ = 4924653552000. Its totient is φ = 723218670720.

The previous prime is 2221021102117. The next prime is 2221021102129. The reversal of 2221021102122 is 2212011201222.

It is a happy number.

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 = 2221021102095 and 2221021102104.

It is not an unprimeable number, because it can be changed into a prime (2221021102129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164892004 + ... + 164905472.

It is an arithmetic number, because the mean of its divisors is an integer number (51298474500).

Almost surely, 2^{2221021102122} is an apocalyptic number.

2221021102122 is an abundant number, since it is smaller than the sum of its proper divisors (2703632449878).

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

2221021102122 is a wasteful number, since it uses less digits than its factorization.

2221021102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14556 (or 14553 counting only the distinct ones).

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

Adding to 2221021102122 its reverse (2212011201222), we get a palindrome (4433032303344).

The spelling of 2221021102122 in words is "two trillion, two hundred twenty-one billion, twenty-one million, one hundred two thousand, one hundred twenty-two".