2221212110022 has 16 divisors (see below), whose sum is σ = 4936026911280. Its totient is φ = 740404036656.

The previous prime is 2221212109999. The next prime is 2221212110083. The reversal of 2221212110022 is 2200112121222.

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 = 2221212109977 and 2221212110004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20566778743 + ... + 20566778850.

It is an arithmetic number, because the mean of its divisors is an integer number (308501681955).

Almost surely, 2^{2221212110022} is an apocalyptic number.

2221212110022 is an abundant number, since it is smaller than the sum of its proper divisors (2714814801258).

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

2221212110022 is a wasteful number, since it uses less digits than its factorization.

2221212110022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41133557604 (or 41133557598 counting only the distinct ones).

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

Adding to 2221212110022 its reverse (2200112121222), we get a palindrome (4421324231244).

The spelling of 2221212110022 in words is "two trillion, two hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, twenty-two".