1121220021211 has 8 divisors (see below), whose sum is σ = 1161789133824. Its totient is φ = 1080925953960.

The previous prime is 1121220021191. The next prime is 1121220021223. The reversal of 1121220021211 is 1121200221211.

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

It is not a de Polignac number, because 1121220021211 - 2¹¹ = 1121220019163 is a prime.

It is a super-3 number, since 3×1121220021211³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121220001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68753041 + ... + 68769346.

It is an arithmetic number, because the mean of its divisors is an integer number (145223641728).

Almost surely, 2^{1121220021211} is an apocalyptic number.

1121220021211 is a deficient number, since it is larger than the sum of its proper divisors (40569112613).

1121220021211 is a wasteful number, since it uses less digits than its factorization.

1121220021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137522681.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1121220021211 its reverse (1121200221211), we get a palindrome (2242420242422).

The spelling of 1121220021211 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, twenty-one thousand, two hundred eleven".