1102421988 has 36 divisors (see below), whose sum is σ = 2889890640. Its totient is φ = 367473672.

The previous prime is 1102421939. The next prime is 1102422007. The reversal of 1102421988 is 8891242011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 566118 + ... + 568061.

It is an arithmetic number, because the mean of its divisors is an integer number (80274740).

Almost surely, 2^1102421988 is an apocalyptic number.

1102421988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1102421988 is an abundant number, since it is smaller than the sum of its proper divisors (1787468652).

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

1102421988 is a wasteful number, since it uses less digits than its factorization.

1102421988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134198 (or 1134184 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1102421988 is about 33202.7406700110. The cubic root of 1102421988 is about 1033.0371873744.

Adding to 1102421988 its reverse (8891242011), we get a palindrome (9993663999).

The spelling of 1102421988 in words is "one billion, one hundred two million, four hundred twenty-one thousand, nine hundred eighty-eight".