1121221222222 has 4 divisors (see below), whose sum is σ = 1681831833336. Its totient is φ = 560610611110.

The previous prime is 1121221222201. The next prime is 1121221222259. The reversal of 1121221222222 is 2222221221211.

It is a semiprime because it is the product of two primes.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1121221222193 and 1121221222202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280305305554 + ... + 280305305557.

It is an arithmetic number, because the mean of its divisors is an integer number (420457958334).

Almost surely, 2^{1121221222222} is an apocalyptic number.

1121221222222 is a deficient number, since it is larger than the sum of its proper divisors (560610611114).

1121221222222 is an equidigital number, since it uses as much as digits as its factorization.

1121221222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560610611113.

The product of its digits is 512, while the sum is 22.

Adding to 1121221222222 its reverse (2222221221211), we get a palindrome (3343442443433).

The spelling of 1121221222222 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".