1122211121021 has 4 divisors (see below), whose sum is σ = 1148309054112. Its totient is φ = 1096113187932.

The previous prime is 1122211120999. The next prime is 1122211121029. The reversal of 1122211121021 is 1201211122211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122211121021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122211121029) 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 3 ways as a sum of consecutive naturals, for example, 13048966481 + ... + 13048966566.

It is an arithmetic number, because the mean of its divisors is an integer number (287077263528).

Almost surely, 2^{1122211121021} is an apocalyptic number.

It is an amenable number.

1122211121021 is a deficient number, since it is larger than the sum of its proper divisors (26097933091).

1122211121021 is an equidigital number, since it uses as much as digits as its factorization.

1122211121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26097933090.

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

Adding to 1122211121021 its reverse (1201211122211), we get a palindrome (2323422243232).

The spelling of 1122211121021 in words is "one trillion, one hundred twenty-two billion, two hundred eleven million, one hundred twenty-one thousand, twenty-one".