1121212002222 has 48 divisors (see below), whose sum is σ = 2660503088880. Its totient is φ = 339141044736.

The previous prime is 1121212002191. The next prime is 1121212002263. The reversal of 1121212002222 is 2222002121211.

It is a happy number.

It is a super-2 number, since 2×1121212002222² (a number of 25 digits) contains 22 as substring.

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 = 1121212002195 and 1121212002204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40592163 + ... + 40619774.

It is an arithmetic number, because the mean of its divisors is an integer number (55427147685).

Almost surely, 2^{1121212002222} is an apocalyptic number.

1121212002222 is an abundant number, since it is smaller than the sum of its proper divisors (1539291086658).

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

1121212002222 is a wasteful number, since it uses less digits than its factorization.

1121212002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81212017 (or 81212014 counting only the distinct ones).

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

Adding to 1121212002222 its reverse (2222002121211), we get a palindrome (3343214123433).

The spelling of 1121212002222 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, two thousand, two hundred twenty-two".