1122100408 has 64 divisors (see below), whose sum is σ = 2481383520. Its totient is φ = 468979200.

The previous prime is 1122100403. The next prime is 1122100417. The reversal of 1122100408 is 8040012211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122100403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315118 + ... + 318658.

Almost surely, 2^1122100408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122100408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1240691760).

1122100408 is an abundant number, since it is smaller than the sum of its proper divisors (1359283112).

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

1122100408 is a wasteful number, since it uses less digits than its factorization.

1122100408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848 (or 3844 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1122100408 is about 33497.7672091738. The cubic root of 1122100408 is about 1039.1476028374.

Adding to 1122100408 its reverse (8040012211), we get a palindrome (9162112619).

The spelling of 1122100408 in words is "one billion, one hundred twenty-two million, one hundred thousand, four hundred eight".