11120021221111 has 64 divisors (see below), whose sum is σ = 12673458547200. Its totient is φ = 9669316608000.

The previous prime is 11120021221087. The next prime is 11120021221151. The reversal of 11120021221111 is 11112212002111.

It is not a de Polignac number, because 11120021221111 - 2¹³ = 11120021212919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120021221151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4135372855 + ... + 4135375543.

It is an arithmetic number, because the mean of its divisors is an integer number (198022789800).

Almost surely, 2^{11120021221111} is an apocalyptic number.

11120021221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11120021221111 is a deficient number, since it is larger than the sum of its proper divisors (1553437326089).

11120021221111 is a wasteful number, since it uses less digits than its factorization.

11120021221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760.

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

Adding to 11120021221111 its reverse (11112212002111), we get a palindrome (22232233223222).

The spelling of 11120021221111 in words is "eleven trillion, one hundred twenty billion, twenty-one million, two hundred twenty-one thousand, one hundred eleven".