1020112212222 has 32 divisors (see below), whose sum is σ = 2267940656160. Its totient is φ = 339883709760.

The previous prime is 1020112212199. The next prime is 1020112212271. The reversal of 1020112212222 is 2222122110201.

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 = 1020112212195 and 1020112212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4148679 + ... + 4387682.

It is an arithmetic number, because the mean of its divisors is an integer number (70873145505).

Almost surely, 2^{1020112212222} is an apocalyptic number.

1020112212222 is an abundant number, since it is smaller than the sum of its proper divisors (1247828443938).

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

1020112212222 is a wasteful number, since it uses less digits than its factorization.

1020112212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8538585 (or 8538579 counting only the distinct ones).

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

Adding to 1020112212222 its reverse (2222122110201), we get a palindrome (3242234322423).

The spelling of 1020112212222 in words is "one trillion, twenty billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-two".