1222222112021 has 8 divisors (see below), whose sum is σ = 1305021791040. Its totient is φ = 1141894065312.

The previous prime is 1222222111997. The next prime is 1222222112029. The reversal of 1222222112021 is 1202112222221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222222112021 - 2¹⁰ = 1222222110997 is a prime.

It is a super-2 number, since 2×1222222112021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222222111984 and 1222222112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222222112029) 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, 617907056 + ... + 617909033.

It is an arithmetic number, because the mean of its divisors is an integer number (163127723880).

Almost surely, 2^{1222222112021} is an apocalyptic number.

It is an amenable number.

1222222112021 is a deficient number, since it is larger than the sum of its proper divisors (82799679019).

1222222112021 is a wasteful number, since it uses less digits than its factorization.

1222222112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235816155.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1222222112021 its reverse (1202112222221), we get a palindrome (2424334334242).

The spelling of 1222222112021 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".