1122121200021 has 32 divisors (see below), whose sum is σ = 1593215559936. Its totient is φ = 700057728000.

The previous prime is 1122121199977. The next prime is 1122121200029. The reversal of 1122121200021 is 1200021212211.

It is not a de Polignac number, because 1122121200021 - 2¹⁰ = 1122121198997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122121200029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87789651 + ... + 87802431.

It is an arithmetic number, because the mean of its divisors is an integer number (49787986248).

Almost surely, 2^{1122121200021} is an apocalyptic number.

It is an amenable number.

1122121200021 is a deficient number, since it is larger than the sum of its proper divisors (471094359915).

1122121200021 is a wasteful number, since it uses less digits than its factorization.

1122121200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22493.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1122121200021 its reverse (1200021212211), we get a palindrome (2322142412232).

The spelling of 1122121200021 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred thousand, twenty-one".