1022222201112 has 192 divisors, whose sum is σ = 3180590038080. Its totient is φ = 290537542656.

The previous prime is 1022222201111. The next prime is 1022222201137. The reversal of 1022222201112 is 2111022222201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022222201111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91158418 + ... + 91169630.

It is an arithmetic number, because the mean of its divisors is an integer number (16565573115).

Almost surely, 2^{1022222201112} is an apocalyptic number.

1022222201112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022222201112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1590295019040).

1022222201112 is an abundant number, since it is smaller than the sum of its proper divisors (2158367836968).

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

1022222201112 is a wasteful number, since it uses less digits than its factorization.

1022222201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162 (or 12155 counting only the distinct ones).

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

Adding to 1022222201112 its reverse (2111022222201), we get a palindrome (3133244423313).

The spelling of 1022222201112 in words is "one trillion, twenty-two billion, two hundred twenty-two million, two hundred one thousand, one hundred twelve".