1021112220222 has 48 divisors (see below), whose sum is σ = 2216639112480. Its totient is φ = 339720708096.

The previous prime is 1021112220179. The next prime is 1021112220239. The reversal of 1021112220222 is 2220222111201.

It is a happy number.

1021112220222 is a `hidden beast` number, since 1 + 0 + 211 + 12 + 220 + 222 = 666.

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 = 1021112220195 and 1021112220204.

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, 20251479 + ... + 20301837.

It is an arithmetic number, because the mean of its divisors is an integer number (46179981510).

Almost surely, 2^{1021112220222} is an apocalyptic number.

1021112220222 is an abundant number, since it is smaller than the sum of its proper divisors (1195526892258).

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

1021112220222 is a wasteful number, since it uses less digits than its factorization.

1021112220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52497 (or 52494 counting only the distinct ones).

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

Adding to 1021112220222 its reverse (2220222111201), we get a palindrome (3241334331423).

The spelling of 1021112220222 in words is "one trillion, twenty-one billion, one hundred twelve million, two hundred twenty thousand, two hundred twenty-two".