1121012221211 has 8 divisors (see below), whose sum is σ = 1121938787664. Its totient is φ = 1120085817760.

The previous prime is 1121012221187. The next prime is 1121012221223. The reversal of 1121012221211 is 1121222101211.

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 1121012221211 - 2¹⁰ = 1121012220187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121012221211.

It is not an unprimeable number, because it can be changed into a prime (1121012221291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16415840 + ... + 16483986.

It is an arithmetic number, because the mean of its divisors is an integer number (140242348458).

Almost surely, 2^{1121012221211} is an apocalyptic number.

1121012221211 is a deficient number, since it is larger than the sum of its proper divisors (926566453).

1121012221211 is a wasteful number, since it uses less digits than its factorization.

1121012221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81501.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1121012221211 its reverse (1121222101211), we get a palindrome (2242234322422).

The spelling of 1121012221211 in words is "one trillion, one hundred twenty-one billion, twelve million, two hundred twenty-one thousand, two hundred eleven".