1121210021201 has 8 divisors (see below), whose sum is σ = 1131723739080. Its totient is φ = 1110706680832.

The previous prime is 1121210021177. The next prime is 1121210021213. The reversal of 1121210021201 is 1021200121211.

It can be written as a sum of positive squares in 4 ways, for example, as 264400611601 + 856809409600 = 514199^2 + 925640^2 .

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 1121210021201 - 2⁶ = 1121210021137 is a prime.

It is a super-2 number, since 2×1121210021201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121210021221) 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 7 ways as a sum of consecutive naturals, for example, 2377196 + ... + 2809533.

It is an arithmetic number, because the mean of its divisors is an integer number (141465467385).

Almost surely, 2^{1121210021201} is an apocalyptic number.

It is an amenable number.

1121210021201 is a deficient number, since it is larger than the sum of its proper divisors (10513717879).

1121210021201 is a wasteful number, since it uses less digits than its factorization.

1121210021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188755.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121210021201 its reverse (1021200121211), we get a palindrome (2142410142412).

The spelling of 1121210021201 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, twenty-one thousand, two hundred one".