1111022221008 has 40 divisors (see below), whose sum is σ = 3280160843968. Its totient is φ = 317434920192.

The previous prime is 1111022220983. The next prime is 1111022221009. The reversal of 1111022221008 is 8001222201111.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111022221009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1653306541 + ... + 1653307212.

Almost surely, 2^{1111022221008} is an apocalyptic number.

It is an amenable number.

1111022221008 is an abundant number, since it is smaller than the sum of its proper divisors (2169138622960).

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

1111022221008 is a wasteful number, since it uses less digits than its factorization.

1111022221008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306613771 (or 3306613765 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 1111022221008 its reverse (8001222201111), we get a palindrome (9112244422119).

The spelling of 1111022221008 in words is "one trillion, one hundred eleven billion, twenty-two million, two hundred twenty-one thousand, eight".