1220010201121 has 2 divisors, whose sum is σ = 1220010201122. Its totient is φ = 1220010201120.

The previous prime is 1220010201103. The next prime is 1220010201191. The reversal of 1220010201121 is 1211020100221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1219558000896 + 452200225 = 1104336^2 + 21265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220010201121 - 2⁷ = 1220010200993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220010201191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610005100560 + 610005100561.

It is an arithmetic number, because the mean of its divisors is an integer number (610005100561).

Almost surely, 2^{1220010201121} is an apocalyptic number.

It is an amenable number.

1220010201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220010201121 is an equidigital number, since it uses as much as digits as its factorization.

1220010201121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220010201121 its reverse (1211020100221), we get a palindrome (2431030301342).

The spelling of 1220010201121 in words is "one trillion, two hundred twenty billion, ten million, two hundred one thousand, one hundred twenty-one".