1122021221112 has 48 divisors (see below), whose sum is σ = 3315062701080. Its totient is φ = 340006430400.

The previous prime is 1122021221077. The next prime is 1122021221137. The reversal of 1122021221112 is 2111221202211.

1122021221112 is a `hidden beast` number, since 11 + 220 + 212 + 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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708345939 + ... + 708347522.

Almost surely, 2^{1122021221112} is an apocalyptic number.

1122021221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122021221112 is an abundant number, since it is smaller than the sum of its proper divisors (2193041479968).

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

1122021221112 is a wasteful number, since it uses less digits than its factorization.

1122021221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416693484 (or 1416693477 counting only the distinct ones).

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

Adding to 1122021221112 its reverse (2111221202211), we get a palindrome (3233242423323).

The spelling of 1122021221112 in words is "one trillion, one hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, one hundred twelve".