1101121242 has 64 divisors (see below), whose sum is σ = 2473390080. Its totient is φ = 324463104.

The previous prime is 1101121223. The next prime is 1101121247. The reversal of 1101121242 is 2421211011.

It is not an unprimeable number, because it can be changed into a prime (1101121247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285358 + ... + 289190.

It is an arithmetic number, because the mean of its divisors is an integer number (38646720).

Almost surely, 2^1101121242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101121242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236695040).

1101121242 is an abundant number, since it is smaller than the sum of its proper divisors (1372268838).

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

1101121242 is a wasteful number, since it uses less digits than its factorization.

1101121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1101121242 is about 33183.1469574542. The cubic root of 1101121242 is about 1032.6307344810.

Adding to 1101121242 its reverse (2421211011), we get a palindrome (3522332253).

The spelling of 1101121242 in words is "one billion, one hundred one million, one hundred twenty-one thousand, two hundred forty-two".