1101220140 has 48 divisors (see below), whose sum is σ = 3118076640. Its totient is φ = 290357760.

The previous prime is 1101220121. The next prime is 1101220157. The reversal of 1101220140 is 410221011.

It is a happy number.

1101220140 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97771 + ... + 108450.

It is an arithmetic number, because the mean of its divisors is an integer number (64959930).

Almost surely, 2^1101220140 is an apocalyptic number.

1101220140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101220140 is an abundant number, since it is smaller than the sum of its proper divisors (2016856500).

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

1101220140 is a wasteful number, since it uses less digits than its factorization.

1101220140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206322 (or 206320 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1101220140 is about 33184.6371081559. The cubic root of 1101220140 is about 1032.6616490474.

Adding to 1101220140 its reverse (410221011), we get a palindrome (1511441151).

The spelling of 1101220140 in words is "one billion, one hundred one million, two hundred twenty thousand, one hundred forty".