1022211221112 has 64 divisors (see below), whose sum is σ = 2839561725600. Its totient is φ = 340726740480.

The previous prime is 1022211221107. The next prime is 1022211221117. The reversal of 1022211221112 is 2111221122201.

It is an interprime number because it is at equal distance from previous prime (1022211221107) and next prime (1022211221117).

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 (1022211221117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11043568 + ... + 11135744.

Almost surely, 2^{1022211221112} is an apocalyptic number.

1022211221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1022211221112 is an abundant number, since it is smaller than the sum of its proper divisors (1817350504488).

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

1022211221112 is a wasteful number, since it uses less digits than its factorization.

1022211221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143533 (or 143523 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1022211221112 its reverse (2111221122201), we get a palindrome (3133432343313).

The spelling of 1022211221112 in words is "one trillion, twenty-two billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twelve".