1121220021011 has 8 divisors (see below), whose sum is σ = 1189749363264. Its totient is φ = 1052976814720.

The previous prime is 1121220020981. The next prime is 1121220021059. The reversal of 1121220021011 is 1101200221211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121220021011 - 2¹⁰ = 1121220019987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121220021071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71525915 + ... + 71541588.

It is an arithmetic number, because the mean of its divisors is an integer number (148718670408).

Almost surely, 2^{1121220021011} is an apocalyptic number.

1121220021011 is a deficient number, since it is larger than the sum of its proper divisors (68529342253).

1121220021011 is a wasteful number, since it uses less digits than its factorization.

1121220021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143067981.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121220021011 its reverse (1101200221211), we get a palindrome (2222420242222).

It can be divided in two parts, 11212200 and 21011, that added together give a palindrome (11233211).

The spelling of 1121220021011 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, twenty-one thousand, eleven".