1121021122211 has 4 divisors (see below), whose sum is σ = 1121031482592. Its totient is φ = 1121010761832.

The previous prime is 1121021122187. The next prime is 1121021122213. The reversal of 1121021122211 is 1122211201211.

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 1121021122211 - 2³⁴ = 1103841253027 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 1121021122211.

It is not an unprimeable number, because it can be changed into a prime (1121021122213) 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, 5016155 + ... + 5234868.

It is an arithmetic number, because the mean of its divisors is an integer number (280257870648).

Almost surely, 2^{1121021122211} is an apocalyptic number.

1121021122211 is a deficient number, since it is larger than the sum of its proper divisors (10360381).

1121021122211 is a wasteful number, since it uses less digits than its factorization.

1121021122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10360380.

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

Adding to 1121021122211 its reverse (1122211201211), we get a palindrome (2243232323422).

The spelling of 1121021122211 in words is "one trillion, one hundred twenty-one billion, twenty-one million, one hundred twenty-two thousand, two hundred eleven".