1200220201121 has 2 divisors, whose sum is σ = 1200220201122. Its totient is φ = 1200220201120.

The previous prime is 1200220201109. The next prime is 1200220201127. The reversal of 1200220201121 is 1211020220021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1166184010000 + 34036191121 = 1079900^2 + 184489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200220201121 - 2²² = 1200216006817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200220201096 and 1200220201105.

It is not a weakly prime, because it can be changed into another prime (1200220201127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600110100560 + 600110100561.

It is an arithmetic number, because the mean of its divisors is an integer number (600110100561).

Almost surely, 2^{1200220201121} is an apocalyptic number.

It is an amenable number.

1200220201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200220201121 is an equidigital number, since it uses as much as digits as its factorization.

1200220201121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200220201121 its reverse (1211020220021), we get a palindrome (2411240421142).

The spelling of 1200220201121 in words is "one trillion, two hundred billion, two hundred twenty million, two hundred one thousand, one hundred twenty-one".