1022222021112 has 96 divisors (see below), whose sum is σ = 2919717964800. Its totient is φ = 334965370464.

The previous prime is 1022222021099. The next prime is 1022222021153. The reversal of 1022222021112 is 2111202222201.

It is a happy number.

1022222021112 is a `hidden beast` number, since 1 + 0 + 222 + 220 + 211 + 12 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4341528 + ... + 4570919.

It is an arithmetic number, because the mean of its divisors is an integer number (30413728800).

Almost surely, 2^{1022222021112} is an apocalyptic number.

1022222021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1022222021112 is an abundant number, since it is smaller than the sum of its proper divisors (1897495943688).

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

1022222021112 is an equidigital number, since it uses as much as digits as its factorization.

1022222021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8912527 (or 8912511 counting only the distinct ones).

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

Adding to 1022222021112 its reverse (2111202222201), we get a palindrome (3133424243313).

The spelling of 1022222021112 in words is "one trillion, twenty-two billion, two hundred twenty-two million, twenty-one thousand, one hundred twelve".