1121011213211 has 4 divisors (see below), whose sum is σ = 1180011803400. Its totient is φ = 1062010623024.

The previous prime is 1121011213171. The next prime is 1121011213213. The reversal of 1121011213211 is 1123121101211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121011213211 - 2³⁸ = 846133306267 is a prime.

It is a super-2 number, since 2×1121011213211² (a number of 25 digits) contains 22 as substring.

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 1121011213211.

It is not an unprimeable number, because it can be changed into a prime (1121011213213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29500295066 + ... + 29500295103.

It is an arithmetic number, because the mean of its divisors is an integer number (295002950850).

Almost surely, 2^{1121011213211} is an apocalyptic number.

1121011213211 is a deficient number, since it is larger than the sum of its proper divisors (59000590189).

1121011213211 is an equidigital number, since it uses as much as digits as its factorization.

1121011213211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59000590188.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1121011213211 its reverse (1123121101211), we get a palindrome (2244132314422).

The spelling of 1121011213211 in words is "one trillion, one hundred twenty-one billion, eleven million, two hundred thirteen thousand, two hundred eleven".