1101121011 has 24 divisors (see below), whose sum is σ = 1609795824. Its totient is φ = 725207040.

The previous prime is 1101121009. The next prime is 1101121033. The reversal of 1101121011 is 1101211011.

It is not a de Polignac number, because 1101121011 - 2¹ = 1101121009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1101120984 and 1101121002.

It is not an unprimeable number, because it can be changed into a prime (1101121061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 852276 + ... + 853566.

It is an arithmetic number, because the mean of its divisors is an integer number (67074826).

Almost surely, 2^1101121011 is an apocalyptic number.

1101121011 is a deficient number, since it is larger than the sum of its proper divisors (508674813).

1101121011 is a wasteful number, since it uses less digits than its factorization.

1101121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371 (or 2368 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

The square root of 1101121011 is about 33183.1434767715. The cubic root of 1101121011 is about 1032.6306622705.

Adding to 1101121011 its reverse (1101211011), we get a palindrome (2202332022).

Subtracting 1101121011 from its reverse (1101211011), we obtain a square (90000 = 300²).

The spelling of 1101121011 in words is "one billion, one hundred one million, one hundred twenty-one thousand, eleven".