1200022121105 has 4 divisors (see below), whose sum is σ = 1440026545332. Its totient is φ = 960017696880.

The previous prime is 1200022121083. The next prime is 1200022121119. The reversal of 1200022121105 is 5011212200021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 873753823504 + 326268297601 = 934748^2 + 571199^2 .

It is not a de Polignac number, because 1200022121105 - 2²⁸ = 1199753685649 is a prime.

It is a super-2 number, since 2×1200022121105² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120002212106 + ... + 120002212115.

It is an arithmetic number, because the mean of its divisors is an integer number (360006636333).

Almost surely, 2^{1200022121105} is an apocalyptic number.

It is an amenable number.

1200022121105 is a deficient number, since it is larger than the sum of its proper divisors (240004424227).

1200022121105 is an equidigital number, since it uses as much as digits as its factorization.

1200022121105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240004424226.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 1200022121105 its reverse (5011212200021), we get a palindrome (6211234321126).

The spelling of 1200022121105 in words is "one trillion, two hundred billion, twenty-two million, one hundred twenty-one thousand, one hundred five".