1202220121001 has 2 divisors, whose sum is σ = 1202220121002. Its totient is φ = 1202220121000.

The previous prime is 1202220120991. The next prime is 1202220121007. The reversal of 1202220121001 is 1001210222021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 838067011600 + 364153109401 = 915460^2 + 603451^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202220121001 - 2¹⁸ = 1202219858857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202220121007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601110060500 + 601110060501.

It is an arithmetic number, because the mean of its divisors is an integer number (601110060501).

Almost surely, 2^{1202220121001} is an apocalyptic number.

It is an amenable number.

1202220121001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202220121001 is an equidigital number, since it uses as much as digits as its factorization.

1202220121001 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 1202220121001 its reverse (1001210222021), we get a palindrome (2203430343022).

The spelling of 1202220121001 in words is "one trillion, two hundred two billion, two hundred twenty million, one hundred twenty-one thousand, one".